About the Authors

Carlos P. Roca

cproca@ethz.ch

Affiliations Chair of Sociology, in particular of Modeling and Simulation, Department of Humanities, Social and Political Sciences, ETH Zurich, Zurich, Switzerland, Grupo Interdisciplinar de Sistemas Complejos (GISC), Departamento de Matemáticas, Universidad Carlos III de Madrid, Leganés, Spain

Sergi Lozano

Affiliation Chair of Sociology, in particular of Modeling and Simulation, Department of Humanities, Social and Political Sciences, ETH Zurich, Zurich, Switzerland

Alex Arenas

Affiliations Departament d'Enginyeria Informàtica i Matemàtiques, Universitat Rovira i Virgili, Tarragona, Spain, Instituto de Biocomputación y Física de Sistemas Complejos (BIFI), Universidad de Zaragoza, Zaragoza, Spain

Angel Sánchez

Affiliations Grupo Interdisciplinar de Sistemas Complejos (GISC), Departamento de Matemáticas, Universidad Carlos III de Madrid, Leganés, Spain, Instituto de Biocomputación y Física de Sistemas Complejos (BIFI), Universidad de Zaragoza, Zaragoza, Spain, Instituto de Ciencias Matemáticas CSIC-UAM-UC3M-UCM, Madrid, Spain

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: CPR AA AS. Performed the experiments: CPR. Analyzed the data: CPR SL AA. Contributed reagents/materials/analysis tools: CPR AS. Wrote the paper: CPR SL AA AS.