The journal thanks its referees for their reviews during the last year:

1 April 2021

Mark Abdollahian, Claremont Graduate University

Norma L. Abrica-Jacinto, Centro Universitario de los Lagos, Universidad de Guadalajara

Petra Ahrweiler, Johannes Gutenberg University Mainz

Frederic Amblard, IRIT - Université de Toulouse 1 Capitole

Li An, PKU-SDSU Complex Human-Environment Systems Center, Department of Geography, San Diego State University

Andreas Angourakis, University of Cambridge

Patrycja Antosz, University of Groningen

Jennifer Badham, Durham University

Sven Banisch, Max Planck Institute for Mathematics in the Sciences, Leipzig

Victorien Barbet, Aix-Marseille Université (Aix-Marseille School of Economics), CNRS & EHESS

Peter Barbrook-Johnson, CRESS, University of Surrey

Itzhak Benenson, Tel Aviv University

Federico Bianchi, Department of Social and Political Sciences, University of Milan

Riccardo Boero, Los Alamos National Laboratory

Christine Boshuijzen-van Burken, University of New South Wales

Giangiacomo Bravo, Department of Social Studies, Linnaeus University

Juan Carlos Burguillo, University of Vigo

George H. Butler, Université Paris-Dauphine

Ning Cai, Northwest University for Nationalities

Timoteo Carletti, Namur Institute for Complex Systems, University of Namur

Dino Carpentras, University of Limerick

Ernesto Carrella, University of Oxford

Brian Castellani, Kent State University

Edmund Chattoe-Brown, University of Leicester

Zhongtian Chen, School of Public Administration, Zhejiang University of Technology

Claudio Cioffi-Revilla, George Mason University and Center for Social Complexity

Andrew Collins, Old Dominion University

Rense Corten, Department of Sociology/ICS, Utrecht University

Marco Cremonini, University of Milan

Marcin Czupryna, Cracow University of Economics

Peter Davis, COMPASS, University of Auckland

Guillaume Deffuant, UCA Lapsco, Irstea Lisc – Irstea

Scott de Marchi, Department of Political Science, Duke University

Frank Dignum, Umea University

Yue Dou, Michigan State University

Alexis Drogoul, UMMISCO, IRD (Institut de Recherche pour le Développement)

Mert Edali, Yildiz Technical University

Bruce Edmonds, Manchester Metropolitan University

Mike Farjam, Linnaeus University

Arthur Feinberg, Delft University of Technology

Thomas Feliciani, School of Sociology and Geary Institute, University College Dublin

Tatiana Filatova, University of Twente

Thomas Fischer, Lund University

Ben Fitzpatrick, Tempest Technologies

Andreas Flache, Department of Sociology, ICS, University of Groningen

Christopher Konstantin Frantz, Norwegian University of Science and Technology (NTNU)

Jean-Marc Frayret, Department of Mathematical and Industrial Engineering, Polytechnique Montreal University

Yerali Gandica, CeReFiM and Namur Center for Complex Systems - naXys, University of Namur, Belgium

Dehua Gao, Shandong Institute of Business and Technology

Cesar Garcia-Diaz, Pontificia Universidad Javeriana

Floriana Gargiulo, GEMASS,CNRS,Université Paris Sorbonne, France

Benoit Gaudou, University Toulouse I Capitole

Jiaqi Ge, University of Leeds

Nicholas Geard, School of Population Health, University of Melbourne

Amineh Ghorbani, Delft University of Technology

Philippe Giabbanelli, DACHB Lab, Furman University

Gianfranco Giulioni, University of Chieti-Pescara

Ross Gore, Old Dominion University

Nicholas M. Gotts, Independent researcher

Francisco Grimaldo, Departament d’Informàtica, Universitat de València

Jürgen Groeneveld, German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig

André Grow, Max Planck Institute for Demographic Research

Ricardo Andrés Guzmán, Centro de Investigación en Complejidad Social, Universidad del Desarrollo

Philipp Harting, Bielefeld University

Erez Hatna, Johns Hopkins University

Rainer Hegselmann, Frankfurt School of Finance & Management

Sylvie Huet, IRSTEA (Institute for Environmental and Agricultural Science and Research) - LISC (Laboratory of Engineering for Complex Systems) and LAPSCO - Laboratory of Social and Cognitive Psychology, Clermont Auvergne University

Elizabeth Hunter, Technological University Dublin

Luis R. Izquierdo, Universidad de Burgos

Wander Jager, University of Groningen

Marco A. Janssen, School of Sustainability, Arizona State University, USA

J Jumadi, Universitas Muhammadiyah Surakarta

Hyeyoung Kim, Department of Geography, The Ohio State University

Konstantin Klemm, University of Leipzig

Andrea Knittel, Division of General Obstetrics and Gynecology, University of North Carolina at Chapel Hill

Matthew Koehler, The MITRE Corporation

Agnieszka Kowalska-Styczeń, Silesian University of Technology

Kalliopi Kravari, School of Informatics, Aristotle University of Thessaloniki, Greece

Jennifer Kunz, University of Augsburg

Jan H. Kwakkel, Delft University of Technology

Francesco Lamperti, Scuola Sant'Anna di Pisa

JoAnn Lee, George Mason University

Srebrenka Letina, Institute for Analytical Sociology, Linköping University

Haiming Liang, School of Economics & Management, Xidian University

Iris Lorscheid, Hamburg University of Technology

Samira Maghool, University of Milan

Nick Malleson, School of Geography, University of Leeds

Steven Manson, Department of Geography, Environment and Society, University of Minnesota

Gianluca Manzo, Centre National de la Recherche Scientifique (CNRS), Paris

Spiro Maroulis, Arizona State University

André C. R. Martin, GRIFE-EACH, University of Sao Paulo

Michael Mäs, University of Groningen

Alys McAlpine, London School of Hygiene and Tropical Medicine

Ugo Merlone, University of Torino

Matthias Meyer, Hamburg University of Technology

Ruth Meyer, Centre for Policy Modelling, Manchester Metropolitan University

Andrea Molle, Chapman University, Orange, CA

Saeed Moradi, Department of Civil, Environmental, and Construction Engineering, Texas Tech University

Kavin Preethi Narasimhan, Centre for Research in Social Simulation, University of Surrey

Michael Neugart, Technische Universität Darmstadt

Andrzej Nowak, The Robert Zajonc Institute for Social Studies, Univeristy of Warsaw

Isamu Okada, Soka University, Tokyo

Mario Paolucci, Institute of Cognitive Science and Technology, CNR

Nicolas Payette, Université du Québec Montréal

Stefano Picascia, University of Glasgow

J. Gareth Polhill, The James Hutton Institute

Ivan Puga-Gonzalez, Université de Strasbourg, CNRS

Robin C. Purshouse, University of Sheffield

Márta Radó, Erasmus MC Rotterdam

Amirarsalan Rajabi, Department of Computer Science, University of Central Florida

Shyaam Ramkumar, Department of Social and Political Sciences, University of Milan

William Rand, NC State University

Jeppe Rich, Technical University of Denmark

Melonie Richey, Altamira Technologies

Simone Righi, University College London

Juliette Rouchier, LAMSADE, CNRS, Université Paris-Dauphine, PSL Research University

Alberto Russo, Department of Economics and Social Sciences, Universit Politecnica delle Marche, Ancona

Mauricio Salgado, Universidad Andres Bello

Mehdi Saqalli, GEODE Géographie de l'Environnement, CNRS Université Toulouse

Jeffrey Schank, University of California, Davis

Geeske Scholz, Institute of Environmental Systems Research, University of Osnabrück

Tobias Schröder, Potsdam University of Applied Sciences

Simon Schweighofer, Complexity Science Hub Vienna and Center for Medical Statistics, Informatics and Intelligent Systems, Medical University of Vienna

Rory Sie, University of Wollongong

Sandra Silva, University of Porto

Guiliang Su, Tsinghua University

Jiongming Su, College of Mechatronics Engineering and Automation, National University of Defense Technology

Abigail Sullivan, Indiana University

Zhanli Sun, Leibniz Institute of Agricultural Development in Transition Economies, Germany

Katarzyna Sznajd-Weron, Department of Theoretical Physics, Faculty of Fundamental Problems of Technology, Wroclaw University of Technology

Károly Takács, Linköping University

Hirofumi Takesue, Faculty of Political Science and Economics, Waseda University

Tanzhe Tang, Delft University of Technology

Wenwu Tang, Department of Geography and Earth Sciences | Center for Applied Geographic Information Science, the University of North Carolina at Charlotte

Guus ten Broeke, Biometris, Wageningen University and Research

Pietro Terna, Universit di Torino

James R Thompson, The MITRE Corporation

Jason Thompson, The University of Melbourne Transport, Health and Urban Design Research Lab

Jos Timmermans, Delft University of Technology, faculty of technology, Policy and Management

Klaus G. Troitzsch, University of Koblenz-Landau

Jouni T Tuomisto, Finnish Institute for Health and Welfare

Elena Vallino, University of Turin

Harko Verhagen, Stockholm University

Ben Vermeulen, University of Hohenheim

Daniele Vilone, Institute of Cognitive Sciences and Technologies - CNR

Eva Vriens, Institute of Cognitive Sciences and Technologies, National Research Council, Rome

Tuong Manh Vu, University of Sheffield

Friederike Wall, Alpen-Adria-Universitaet Klagenfurt

Christopher Weimer, Air Force Institute of Technology

Gérard Weisbuch, Département de physique de l'Ecole normale supérieure, Paris

Nanda Wijermans, Stockholm Resilience Centre

Brian Wilder, Harvard University - Center for Research on Computation and Society

Wenqing Wu, College of Management and Economics, Tianjin University

Renbin Xiao, School of Automation, Huazhong University of Science and Technology

Shaoping Xiao, The University of Iowa

Hang Xiong, College of Economics and Management, Macro Agriculture Research Institute

Qing Xu, School of Information Engineering, Jiangxi University of Science and Technology

Jianxin Yang, Department of Land Resource Management, School of Public Administration, China University of Geosciences (Wuhan)

Pei-jun Ye, Institute of Automation, Chinese Academy of Sciences

Abigail York, Arizona State University

Neil Yorke-Smith, Delft University of Technology