| Marko | Tadić | University of Zagreb | 2017 |
| Adrian | Gradinar | Lancaster University, United Kingdom | 2017 |
| Aleksandr | Korolev | Volga State University of Technology, Russia | 2014 |
| Alexandru | Tomescu | University of Helsinki | 2015 |
| Alexey | Medvedev | Sobolev Institute of Mathematics of the Siberian Branch of the Russian Academy of Sciences, Russia | 2015, 2017 |
| Alison Gordon | Lynch | University of Wisconsin - Madison, USA | 2014 |
| Amira | Šerifović Trbalić | University of Tuzla | 2022 |
| Ana | Galov | University of Zagreb | 2018 |
| Ana Isabel | Jimenez Belenguer | Valencia Polytechnic University | 2023 |
| Anastasia | Nathanson | University of Minnesota | 2024 |
| Andreas | Bender | Centre for Molecular Informatics, University of Cambridge, United Kingdom | 2017 |
| Andreas | Darmann | University of Graz | 2019, 2023 |
| Andreas | Kleinschmit von Lengefeld | Institut technologique FCBA | 2014 |
| Andreea | Nechifor | Transilvania University, Faculty of Letters | 2018 |
| Andreja | Pirc Barčić | University of Zagreb, Croatia | 2017 |
| Anthony | Perez | Université d´Orléans | 2023 |
| Aris | Violatzis | Klimaka NGO, Suicide Prevention Center, Greece | 2013 |
| Arkadiusz | Kawa | Poznan University of Economics and Business, Poland | 2016, 2017 |
| Arpad | Forberger | Gamax Laboratory Solutions Ltd. | 2016 |
| Ivan | Damjanović | University of Niš | 2025 |
| Adalberto | Simeone | KU Leuven, Belgium | 2018 |
| Alex | Dumbrell | University of Essex, United Kingdom | 2013, 2015 |
| Almir | Huskanović | Mašinski fakultet, Univerzitet u Zenici | 2017 |
| Ante | Žuljević | Institute of Oceanography and Fisheries, Croatia | 2014, 2018 |
| Bernard | Lidicky | Iowa State University, USA | 2017 |
| David | Obdržálek | Charles University, Czech Republic | 2015, 2018 |
| Didem | Gözüpek | Gebze Institute of Technology | 2015, 2016 |
| Dijana | Pavičić Hamer | Center for Marine Research - Ruđer Bošković Institute, Croatia | 2015, 2017 |
| Francisco | de Machado | Maia University Institute | 2019 |
| Hermina | Alajbegović | Mašinski fakultet, Univerzitet u Zenici | 2017 |
| Ján | Karabáš | Institute of Mathematics and Computer Science, Science and Research Institute of Matej Bel University, Slovakia | 2015 |
| János | Ruff | University of Pécs, Hungary | 2015 |
| Jay | Schweig | Oklahoma state University | 2018 |
| Jelena | Sedlar | University of Zagreb, Faculty of Civil Engineering, Croatia | 2014 |
| Kaveh | Bazargan | Shahid Beheshti University | 2018 |
| Maja | Lazarević | University of Belgrade, Faculty of Biology | 2018 |
| Marco | Piangerelli | University of Camerino | 2018 |
| Petar | Kružić | Faculty of Science, University of Zagreb, Croatia | 2013, 2015, 2016, 2018 |
| Peter | Mackelworth | Blue World Institute of Marine Reserach and Conservation, Croatia | 2013, 2014, 2015, 2016 |
| Russell Stephen | Woodroofe | Mississippi State University, USA | 2014, 2015, 2016, 2017 |
| Tinaz | Ekim | Boğaziçi University, Turkey | 2014, 2015, 2016, 2017 |
| Toni | Safner | University of Zagreb | 2018 |
| Vladimir | Ivović | University of Belgrade, Serbia | 2015 |
| Voyko | Kavcic | Wayne State University, Institute of Gerentology | 2017 |
| Wassim | El Hajj Chehade | Beirut Arab University | 2018 |
| Wolfgang | Huerst | Utrecht University, Netherlands | 2016 |
| Zoltan | Horvath | University of Pécs, Hungary | 2015, 2018 |
| Alberto | Pallavicini | Università degli Studi di Trieste, Italy | 2016 |
| Amela | Muratović-Ribić | University of Sarajevo, Faculty of Science | 2018 |
| Andrew John | Wright | George Mason University, USA | 2015 |
| Andrew-Paul | Fabel | Mississippi State University | 2014, 2017, 2018, 2020 |
| Anja | Podlesek | Univerza v Ljubljani, Filozofska fakulteta | 2015 |
| Bernard | Ries | Universite Paris Dauphine, France | 2015 |
| Bojan | Hamer | Center for Marine Research, Ruđer Bošković Institute, Croatia | 2014, 2015, 2016 |
| Bruce | Ferwerda | Jonkoping University | 2024 |
| Cafer | Caliskan | Kadir Has University, Turkey | 2017, 2018 |
| Dagmar | Radin | University of Zagreb, Croatia | 2015 |
| David | Devallance | West Virginia University, USA | 2014, 2017 |
| David | Kerr | Oregon State University, USA | 2013, 2014 |
| Dimitrios | Thilikos | National and Kapodistrian University of Athens, Greece | 2015 |
| Elena | Resmerita | Alpen-Adria University of Klagenfurt | 2017 |
| Elena | Valentinova Konstantinova | Sobolev Institute of Mathematics, Russia | 2012, 2014, 2015, 2016, 2017, 2018 |
| Eric | Gottlieb | Rhodes College | 2018 |
| Evgeni | Sharapov | Volga State University of Technology, Russia | 2014 |
| Francesco | Belardo | University of Messina, Italy | 2014, 2016 |
| Guido | De Philippis | SISSA Triste | 2016 |
| Ivana | Maguire | Faculty of Science, University of Zagreb, Croatia | 2015 |
| Jens | Grubert | Coburg University of Applied Sciences and Arts | 2018 |
| Keith | Tudor | Auckland University of Technology, New Zealand | 2015 |
| Larbi | Alaoui | Universitat Pompeu Fabra | 2018 |
| Laura Jean | Sheppardson | University of Mississippi, USA | 2015 |
| Marcelo | Mydlarz | Universidad Nacional de General Sarmiento, Argentina | 2015, 2017 |
| Marcin | Anholcer | Poznań University of Economics and Business | 2012, 2013, 2014, 2015, 2016, 2017, 2018 |
| Marco Alberto Luca | Zuffi | Museum of Natural History, University of Pisa, Italy | 2015, 2017 |
| Miklós | Krész | University of Szeged, Hungary | 2013, 2015, 2017 |
| Mladen | Kučinić | University of Zagreb, Croatia | 2014, 2015, 2018 |
| Natalia | Maslova | Institute of Mathematics and Mechanics of Ural Branch of Russian Academy of Sciences, Russia | 2015, 2016 |
| Nikica | Šprem | University of Zagreb, Faculty of Agriculture | 2018 |
| Peter | Chanthanakone | University of Iowa, School of Art and Art History | 2018 |
| Sang-il | Oum | Korea Advanced Institute of Science and Technology (KAIST), South Korea | 2015 |
| Scott | Heppell | Oregon State University | 2016 |
| Sibel | Ozkan | Gebze Technical University, Turkey | 2017, 2018 |
| Sugata | Gangopadhyay | Indian Institute of Technology, India | 2011, 2012, 2018 |
| Tobias | Kuna | University of Reading, United Kingdom | 2018 |
| Vadim | Lozin | University of Warwick, UK | 2015 |
| Vladislav | Kubon | Charles University | 2018 |
| Aygul | Babadjanova | Urgench State University, Uzbekistan | 2017 |
| Belma | Kalamujić Stroil | University of Sarajevo | 2023 |
| Benedikt | Neyses | Luleå University of Technology, Wood Science and Engineering | 2016 |
| Benjamine | Lejeune | University of Liege | 2024 |
| Berenice | Martinez Barona | UPC Barcelona | 2019 |
| Bernard R. | Brooks | National Institutes of Health | 2018 |
| Biljana | Lazović | University of Montenegro | 2023 |
| Biljana | Panin | EDUCONS University | 2023 |
| Bojana | Stojanova | University of Ostrava, Faculty of Science | 2023 |
| Carlos Nuno | Laranjeiro | University of Coimbra | 2023 |
| Carolin | Denkert | BTU Cottbus-Senftenberg, Lehrstuhl Diskrete Mathematik und Grundlagen der Informatik, Germany | 2017 |
| Caterina | Fortuna | The Institute for Environmental Protection and Research, Italy | 2013 |
| Cemil | Dibek | Boğaziçi University, Turkey | 2014, 2015 |
| Chiara | de Fabritiis | University of Ancona | 2023 |
| Chiara | Luise | Department of Pharmaceutical Chemistry, Martin-Luther-University of Halle-Wittenberg | 2018, 2019 |
| Conrad | Simoben Veranso | Department of Pharmaceutical Chemistry, Martin-Luther-University of Halle-Wittenberg | 2018, 2019 |
| Cristina | Dimulescu | Transilvania University, Faculty of Letters | 2018 |
| Da-Wei | Yang | Beijing Jiaotong University, P.R. China | 2014, 2017 |
| Daniel | Le Roux | Stellenbosch University | 2023 |
| Daniel | Paulusma | Durham University, United Kingdom | 2014, 2017 |
| David | Stallcop | Universal Forest Products | 2016 |
| Davide Lucio | Spano | University of Cagliari | 2024 |
| Dennis | Jones | SP Technical Research Institute of Sweden AB, United Kingdom | 2015, 2016 |
| Diego | Peñaloza | SP Technical Research Institute of Sweden | 2016 |
| Francesco | Barile | Maastricht University | 2025 |
| Dominika | Ochnik | Katowice School of Economics, Poland | 2016 |
| Đorđe | Mitrović | University of Auckland, New Zealand | 2024 |
| Dorian | Vodopia | UiT - The Arctic University of Norway, Norwegian College of Fishery Science | 2023 |
| Alejandro | Adler | Positive Psychology Center, University of Pennsylvania | 2017 |
| Andrea | Munaro | University of Parma | 2017, 2024 |
| Arlene A. | Pascasio | De La Salle University, Philippines | 2013 |
| Attila | Joó | University of Hamburg | 2025 |
| Charles | Frihart | Forest Products Laboratory | 2016 |
| Clément | Dallard | University of Fribourg | 2023, 2024, 2025 |
| Dirk | Berthold | Fraunhofer Institute for Wood Research, Germany | 2013 |
| Irena | Penev | University of Leeds | 2018 |
| Kenji | Mizuguchi | National Institutes of Biomedical Innovation, Health and Nutrition | 2016, 2017 |
| Lyndall | Bull | Forestry Tasmania, Australia | 2017 |
| Martin | Strehler | BTU Cottbus-Senftenberg, Lehrstuhl Diskrete Mathematik und Grundlagen der Informatik | 2018, 2019 |
| Mirjana | Adakalić | Univerza v Črni gori, Biotehnična fakulteta | 2016 |
| Paul | Medvedev | Penn State University, USA | 2013 |
| Pavel | Klavik | Charles University | 2017 |
| Yayoi | Natsume | National Institutes of Biomedical Innovation, Health and Nutrition, Osaka | 2016, 2017 |
| Yoichi | Murakami | National Institutes of Biomedical Innovation, Health and Nutrition | 2016 |
| Edo | Kegel | FirmoLin Technologies BV | 2016 |
| El-Ghazali | Talbi | Polytech'Lille - University Lille 1, France | 2016 |
| Elizabeth | Dickinson | West Virginia University, USA | 2017 |
| Elizabeth | Dunningham | SCION, New Zealand | 2015 |
| Ellen | Vorstenbosch | Sant Joan de Déu Research Foundation, Spain | 2015 |
| Elvis | Baraković | University of Tuzla | 2023 |
| Epameinondas | Fritzilas | Illumina Cambridge, Computational Biology Group, United Kingdom | 2011 |
| Eric | Hansen | Oregon State University, USA | 2017, 2023 |
| Erik | Westlund | Kennesaw State University | 2024 |
| Erlend | Nybakk | BI Norwegian Business School, Norway | 2017 |
| Eun Jung | Kim | Universite Paris-Dauphine | 2015, 2016 |
| Eva | Kisdi | University of Helsinki, Finland | 2012 |
| Fabienne | Ratajczak | BTU Cottbus-Senftenberg, Lehrstuhl Diskrete Mathematik und Grundlagen der Informatik | 2023 |
| Fayruza | Ismagilova | | 2019 |
| Fidele | Ntie-Kang | Department of Pharmaceutical Chemistry, Martin-Luther-University of Halle-Wittenberg | 2018, 2019 |
| Flavia | Bonomo | University of Buenos Aires, Argentina | 2014 |
| Flávia | Pires | Instituto Politécnico de Bragança | 2018 |
| Francesca | Gandini | St. Olaf College | 2024 |
| Gábor | Somlai | Eötvös Loránd University | 2022, 2024 |
| Gabriel Hernan | Pretel | University of Wisconsin - Madison, USA | 2014 |
| Gabriella | Bigatti | eConsulenza | 2018 |
| Guillermo | Martínez Pastur | Southern Centre for Scientific Research (CADIC), Argentina | 2017 |
| Guillermo | Restrepo | Max Planck Institute for Mathematics in the Sciences | 2018 |
| Gulnara | Bektemyssova | International Information Technology University, Kazakhstan | 2017 |
| Ignacio | Guillen Guillamon | Valencia Polytechnic University | 2023 |
| Ilias | Kotsireas | Wilfrid Laurier University, Canada | 2023 |
| Ivan | Luković | University of Belgrade | 2023 |
| Jamolbek | Mattiev | Urgench State University | 2023, 2024 |
| Jan | Tippner | Mendel University Brno, Czech Republic | 2013 |
| Jana | Masarikova | University of Warsaw, Faculty of Mathematics, Informatics and Mechanics | 2024 |
| Jason | Alexander | Lancaster University, United Kingdom | 2018 |
| Jean-Florent | Raymond | CNRS, LIMOS | 2017, 2023 |
| Jeanette | Hadaschik | University of Twente | 2024 |
| Jesse | Beisegel | BTU Cottbus-Senftenberg, Lehrstuhl Diskrete Mathematik und Grundlagen der Informatik, Germany | 2017, 2018, 2023 |
| Jessica | Cauchard | Ben-Gurion University of the Negev | 2018, 2022 |
| Jian-Bing | Liu | Beijing Jiaotong University, P.R. China | 2014 |
| Jiangtao | Shi | Peking University, P.R. China | 2011 |
| Jin-Xin | Zhou | Beijing Jiaotong University, P.R. China | 2009 |
| Joachim | Schauer | University of Graz, Department of Statistics and Operations Research | 2018 |
| João | Filipe | Maisis - Information Systems Lda. | 2018 |
| Jonathan | Woody | Mississippi State University, USA | 2016, 2017 |
| Jonguk | Park | National Institutes of Biomedical Innovation, Health and Nutrition | 2017 |
| Jörg | Fallmann | Leipzig University | 2017 |
| Joszef | Lörinczi | Loughborough University, UK | 2018 |
| Judi | Pettigrew | University of Limerick, Ireland | 2015 |
| Julia | Kniyzeva | Saint Petersburg State Technological University of Plant Polymers, Russia | 2015 |
| Karlo | Hock | School of Biological Sciences, University of Queensland, Australia | 2015 |
| Kayhan | Latifzadeh | University of Luxembourg | 2023 |
| Kendall | Conroy | Oregon State University | 2016 |
| Khabibulla | Madatov | Urgench State University | 2022 |
| Kiyoshi | Nitta | Yahoo Japan Research, Japan | 2014 |
| Kudratillo | Fayazov | Turin Polytechnic University in Tashkent, Uzbekistan | 2017 |
| Lada | Lukić Bilela | University of Sarajevo | 2023 |
| Lara | Fernández | Rosario National University, FCEIA, Argentina | 2024 |
| Laura | Iacolina | University of Zagreb, Faculty of Agriculture | 2018, 2019 |
| Lionel | Médini | Claude Bernard Lyon 1 University | 2022 |
| Lucas | Praetorius | Department of Pharmaceutical Chemistry, Martin-Luther-University of Halle-Wittenberg | 2018, 2019 |
| Luciano | Grippo | Universidad Nacional de General Sarmiento, Argentina | 2012 |
| Luis | Leiva | SCILING - Machine learning for business, Spain | 2018 |
| Luis Miguel | Proença | Instituto Universitario de Maia Ismai | 2018 |
| Luise | Schaefer | Technical University of Munich, Germany | 2017 |
| Maël | Dumas | Université d´Orléans | 2023 |
| Maja | Dundović | University of Rijeka | 2022, 2023 |
| Marc | Gibernau | University of Corsics (CNRS) | 2024 |
| Marcin Jakub | Kamiński | The Free University of Brussels (Université libre de Bruxelles - ULB), Belgium | 2009, 2010 |
| María Ínes | López Pujato | Rosario National University | 2016 |
| Marie-Lise | Pannier | University of Angers | 2023 |
| Marina | Nonić | University of Belgrade | 2023 |
| Mark | Lochrie | University of Central Lancashire: Media Innovation Studio, United Kingdom | 2015 |
| Maroof Adeniyi | Akintoye | University of Fort Hare, Republic of South Africa | 2011 |
| Martien | Kooyman | European Society for Bonding Psychotherapy, Netherlands | 2014 |
| Martin | Mačaj | Comenius University, Slovakia | 2012 |
| Martín | Safe | Universidad Nacional de General Sarmiento, Argentina | 2012, 2018 |
| Martina | Senzacqua | AEA s.r.l. - Loccioni Group | 2018 |
| Matjaž | Kovše | University of Leipzig, Germany | 2013 |
| Matthew | Johnson | Durham University, United Kingdom | 2014, 2017 |
| Meike | Hatzel | National Institute of Informatics, Tokyo, Japan | 2024 |
| Mikhail | Budrevich | Moscow State University, Russian Federation | 2017 |
| Mira | Radunić | Institut za jadranske kulture i melioraciju krša | 2018 |
| Mirza | Redžić | Karlsruhe Institute of Technology, Institute of Theoretical Informatics | 2024 |
| Monica | Milasi | University of Messina, Italy | 2015, 2018 |
| Naghmeh | Ivaki | University of Coimbra | 2023 |
| Nancy | Retzlaff | Leipzig University | 2017 |
| Natália | Martínková | Institute of Vertebrate Biology, Academy of Sciences, Czech Republic | 2015 |
| Nathan | Kotlarewski | University of Tasmania | 2023 |
| Nevena | Kuzmanović | University of Belgrade, Faculty of Biology | 2018 |
| Olga | Markova | Moscow State University, Russian Federation | 2017 |
| Oliver | Schaudt | University of Cologne, Germany | 2012, 2015 |
| Pablo | De Caria | National University of La Plata, Argentina | 2014 |
| Pablo | Peri | Southern Centre for Scientific Research (CADIC), Argentina | 2017 |
| Pascal | Gollin | Institute of Basic Science (IBS), Republic of Korea | 2024 |
| Peter | Meinlschmidt | Fraunhofer Institute for Wood Research, Germany | 2013 |
| Petr | Homola | Charles University in Prague, UFAL | 2009, 2010 |
| Edgardo I. | Garrido-Perez | University of Göttingen, Germany | 2011 |
| Peter | Rademacher | University of West Hungary | 2016 |
| Pietro | Giovacchini | Universita degli Studi di Siena | 2024 |
| Pim | van 't Hof | University of Bergen, Norway | 2012 |
| Predrag | Lazarević | University of Belgrade, Faculty of Biology | 2018 |
| Aaron | Quigley | University of St Andrews, United Kingdom | 2017 |
| Adam Paweł | Wojda | AGH University of Science and Techology, Poland | 2012 |
| Alexander A. | Ivanov | Imperial College London, United Kingdom | 2009, 2010, 2011, 2013, 2014, 2015, 2016, 2017 |
| Alexander | Guterman | Moscow State University, Russia | 2013, 2017 |
| Alexander | Mednykh | Sobolev Institute of Mathematics, Novosibirsk, Russia | 2011 |
| Alexander | Pott | Otto von Guericke University, Germany | 2015, 2017 |
| Andras | Nahlik | University of Sopron | 2018 |
| Andreas | Brandstädt | University of Rostock, Germany | 2012, 2015 |
| Andreas Thomas | Schmidt | Karlsruhe University of Applied Sciences, Germany | 2015 |
| Andrew | DeWoody | Purdue University | 2025 |
| Antonio | Penta | Universitat Pompeu Fabra | 2018 |
| Bettina | Eick | Institut Computational Mathematics, Technische Universität Braunschweig, Germany | 2016 |
| Brian | Alspach | Simon Fraser University, Canada | 2007 |
| Cheryl E. | Praeger | University of Western Australia, Australia | 2011, 2018 |
| Chi-Kwong | Li | College of William and Mary, Williamsburg, Virginia, USA | 2017 |
| Chia Gek | Ling | University of Malaya, Malaysia | 2012 |
| Christophe | Picouleau | Conservatoire National des Arts et Métiers (CNAM), CEDRIC, France | 2016 |
| Damir | Vukičević | University of Split , Faculty of Science, Croatia | 2014 |
| Dave | Witte Morris | University of Lethbridge, Canada | 2010, 2011, 2014, 2015, 2017 |
| Dijana | Ilišević | University of Zagreb, Croatia | 2013 |
| Djordje | Baralić | Mathematical Institute of the Serbian Academy of Sciences and Arts | 2016 |
| Domenico | Catalano | University of Aveiro, Portugal | 2007, 2011 |
| Donatella | Marini | University of Pavia, Italy | 2015 |
| Fabio | Vlacci | Universita degli Studi di Trieste | 2014, 2024, 2025 |
| Toralf | Trautmann | HTW Dresden | 2024 |
| Dževad | Zečić | Mašinski fakultet, Univerzitet u Zenici | 2017 |
| Edward | Dobson | Mississippi State University, USA | 2007, 2008, 2009, 2010, 2011 |
| Ekkehard | Köhler | BTU Cottbus-Senftenberg, Lehrstuhl Diskrete Mathematik und Grundlagen der Informatik | 2017, 2018, 2019, 2023 |
| Ella | Arensman | School of Public Health / National Suicide Research Foundation | 2018 |
| Emanuela | Merelli | University of Camerino | 2018 |
| Endre | Boros | Rutgers University, USA | 2012, 2015, 2017, 2018, 2024 |
| Fedor | Fomin | University of Bergen, Norway | 2024 |
| Ferdinando | Cicalese | University of Salerno, Italy | 2010, 2012 |
| Franco | Brezzi | Istituto Universitario di Studi Superiori | 2015 |
| Frederick A. | Kamke | Oregon State University, USA | 2013 |
| Gayrat | Matlatipov | Urgench State University | 2022 |
| Gordon | Williams | University of Alaska Fairbanks, USA | 2015, 2016 |
| Gretta | Pecl | University of Tasmania, Centre for Marine Socioecology & ARC Future Fellow | 2018 |
| Gustavo Adolfo | Fernández Alcober | University of the Basque Country, Spain | 2012 |
| György | Kiss | Eötvös Loránd University, Hungary | 2007, 2008, 2009, 2010, 2011, 2012, 2013 |
| Hans | Bodlaender | Utrecht University | 2024 |
| Haruki | Nakamura | National Institutes of Biomedical Innovation, Health and Nutrition | 2016 |
| Henry | Glover | Ohio State University, USA | 2007, 2008 |
| Ilya | Ponomarenko | V. A. Steklov Institute of Mathematics, Russia | 2010, 2011 |
| Jack | Koolen | POSTECH, South Korea | 2007 |
| Janko | Gravner | University of California, Davis, USA | 2017 |
| Jarosław | Grytczuk | Jagiellonian University, Poland | 2015 |
| Jin Ho | Kwak | POSTECH, South Korea | 2007, 2013 |
| Jing | Xu | Capital Normal University, P.R. China | 2010 |
| José | Barbosa | Instituto Politécnico de Bragança | 2018 |
| Joy | Morris | University of Lethbridge, Canada | 2010, 2011, 2014, 2015, 2017, 2024 |
| Larry | Crowder | Stanford University, Hopkins Marine Station | 2018 |
| Leah | Berman | University of Alaska Fairbanks, USA | 2015, 2016 |
| Lech | Muszynski | Oregon State University | 2016 |
| Liliana | Alcón | Universidad Nacional de La Plata, Argentina | 2013, 2018 |
| Liudmila | Makhotina | State Technological University of Plant Polymers, Russia | 2014 |
| Luis | Martínez Fernández | University of the Basque Country, Spain | 2009, 2010, 2012, 2014, 2015 |
| Marco | Buratti | University of Perugia, Italy | 2015 |
| Marisa | Gutiérrez | Universidad Nacional de La Plata, Argentina | 2013, 2017 |
| Mark | Maclean | Seattle University, USA | 2015 |
| Marston | Conder | University of Auckland, New Zealand | 2007, 2010, 2011, 2024 |
| Martin | Škoviera | Comenius University, Slovakia | 2007, 2010, 2011 |
| Mathieu | Denoel | University of Liege | 2024 |
| Matthew | Turk | University of California, Santa Barbara | 2018 |
| Michael | Giudici | University of Western Australia, Australia | 2014 |
| Michal | Zajac | Slovak Technical University, Slovakia | 2013 |
| Mikhail E. | Muzychuk | Netanya Academic College, Israel | 2007, 2008, 2009, 2010, 2011, 2014, 2015, 2018 |
| Nicholas | Procter | University of South Australia, Australia | 2013 |
| Nicolas | Trotignon | École normale supérieure de Lyon | 2023 |
| Norbert | Seifter | University of Leoben, Austria | 2008, 2014 |
| Pablo Daniel | Torres | Rosario National University | 2017 |
| Pablo | Spiga | University of Milano-Bicocca, Italy | 2008, 2011, 2012, 2014, 2017 |
| Patrick William | Fowler | University of Sheffield, United Kingdom | 2012, 2013 |
| Paul | Coulton | Lancaster University, United Kingdom | 2017 |
| Paul | Terwilliger | University of Wisconsin-Madison, USA | 2007, 2010, 2011, 2013, 2014, 2018 |
| Peter | Horak | University of Washington Tacoma | 2018 |
| Petr | Golovach | University of Bergen, Norway | 2024 |
| Pinar | Heggernes | University of Bergen, Norway | 2012 |
| Raffaele | Scapellato | Politecnico di Milano, Italy | 2008, 2010 |
| Robert | Jajcay | Comenius University, Slovakia | 2009, 2010, 2014, 2015 |
| Robin | Wilson | The Open University, United Kingdom | 2014, 2017 |
| Roman | Nedela | Matej Bel University, Slovakia | 2007, 2009, 2010, 2011, 2012, 2018 |
| Saket | Saurabh | Institute of Mathematical Sciences, Chennai | 2024 |
| Scott | Leavengood | Oregon State University, College of Forestry | 2018 |
| Sergei | Evdokimov | V. A. Steklov Institute of Mathematics, Russia | 2011, 2012, 2013, 2015 |
| Shaofei | Du | Capital Normal University, P.R. China | 2009, 2010, 2011, 2018 |
| Siamak | Yassemi | University of Tehran, Institute for Research in Fundamental Sciences | 2018 |
| Slobodan | Simić | Mathematical Institute SANU, Serbia | 2014 |
| Stephan | Foldes | University of Turku, Finland | 2024 |
| Stephen | Wilson | Northern Arizona University, USA | 2015 |
| Tamás | Szőnyi | Eötvös Loránd University, Hungary | 2012, 2013, 2015, 2016 |
| Tatjana | Živičnjak | Faculty of Veterinary Medicine, University of Zagreb, Croatia, | 2015 |
| Tatsuro | Ito | Kanazawa University, Japan | 2013 |
| Tomislav | Došlić | University of Zagreb, Faculty of Civil Engineering, Croatia | 2014 |
| Veljko | Milutinović | School of Electrical Engineering, University of Belgrade, Serbia | 2015, 2018 |
| Vladimir | Gurvich | Rutgers University, USA | 2013, 2014, 2015, 2017, 2018, 2024 |
| Waclaw | Marzantowicz | Adam Mickiewicz University in Poznań | 2016, 2017 |
| Wilfired | Imrich | University of Leoben, Austria | 2012 |
| Xuesong | Ma | Capital Normal University, P.R. China | 2008, 2009 |
| Yan Quan | Feng | Beijing Jiaotong University, P.R. China | 2009, 2010, 2011, 2013, 2014, 2017 |
| Young Soo | Kwon | Yeungnam University, South Korea | 2007, 2011, 2013 |
| Yves | Crama | QUANTOM (Centre for Quantitative Methods and Operations Management), Belgium | 2018 |
| Zorica | Stanimirović | University of Belgrade | 2018, 2024 |
| Reiko | Watanabe | National Institutes of Biomedical Innovation, Health and Nutrition | 2017 |
| György | Gehér | University of Szeged, Hungary | 2014 |
| Ricardo | Gallego Torromé | Samostojni raziskovalec / Independent Researcher | 2018, 2019 |
| Riccardo | Paci | AEA s.r.l. - Loccioni Group | 2018 |
| Robert | Scheffler | BTU Cottbus-Senftenberg | 2018, 2023 |
| Roberta | Bozzali | Confindustria Ancona | 2018 |
| Roderick | Mast | Conservation International, USA | 2011 |
| Rongxia | Hao | Beijing Jiaotong University, P.R. China | 2017 |
| Rosario | Rummo | Università degli Studi di Napoli Federico II | 2024 |
| Rosie | Sargent | SCION, New Zealand | 2015 |
| Sándor | Jenei | University of Pécs | 2023 |
| Sara Sabrina | Zemljič | Comenius University in Bratislava | 2018 |
| Sarah | Berkemer | Leipzig University | 2017 |
| Sayatbek | Orazbekov | International Information Technology University, Kazakhstan | 2017 |
| Scott | Mills | University of Adelaide, Australia | 2013 |
| Sebastian | Wiederrecht | Discrete Mathematics Group at IBS in Daejeon | 2023 |
| Sergei | Goriainov | Krasovskii Institute of Mathematics and Mechanics of the Ural Branch of the Russian Academy of Sciences | 2016 |
| Serkan | Özdemir | Duzce University, Turkey | 2014 |
| Shahbozbek | Abdunabiev | Turin Polytechnic University in Tashkent, Uzbekistan | 2017 |
| Sherimmat | Avazov | Bukhara Engineering - Technological Institute, Uzbekistan | 2017 |
| Shizhou | Yang | Queen´s Unievrsity Belfast | 2024 |
| Shukurla | Bekchanov | Urgench State University, Uzbekistan | 2017 |
| Sihem | Mesnager | University of Paris VIII, France | 2017 |
| Sonja | Nikolić | Institute Ruđer Bošković | 2018 |
| Stefan | Lendl | S2 Data and Algorithms | 2023 |
| Stillanos | Dais | Klimaka NGO, Suicide Prevention Center, Greece | 2013 |
| Sylwia | Cichacz-Przeniosło | AGH University of Science and Technology, Poland | 2012, 2014, 2016, 2018 |
| Tamás | Vinkó | University of Szeged | 2022, 2023 |
| Tara | Abrishami | University of Hamburg, Germany | 2024 |
| Tatjana | Klepo | Institut za jadranske kulture i melioraciju krša | 2018 |
| Thomas | Gatter | Leipzig University | 2017 |
| Tijana | Milekić | University of Belgrade, Faculty of Biology | 2018 |
| Tomáš | Masarik | University of Warsaw, Faculty of Mathematics, Informatics and Mechanics | 2024 |
| Ulrich | Pferschy | University of Graz, Department of Statistics and Operations Research | 2018, 2023 |
| Umidjon | Narziev | Bukhara Engineering - Technological Institute, Uzbekistan | 2017 |
| Vaclav | Sebera | Mendel University Brno, Czech Republic | 2015, 2016 |
| Wilmer | Leal | Leipzig University | 2018 |
| Yasamin | Khaefi | Amirkabir University of Technology | 2024 |
| Zakir | Deniz | Süleyman Demirel University, Turkey | 2015 |
| Zoran | Šverko | University of Rijeka | 2024, 2025 |
