About the Authors

Sven Van Segbroeck

Affiliations COMO, Vrije Universiteit Brussel, Brussels, Belgium, MLG, Département d'Informatique, Université Libre de Bruxelles, Brussels, Belgium, GADGET, Lisboa, Portugal

Francisco C. Santos

Affiliations CENTRIA, Departamento de Informática, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Caparica, Portugal, ATP-Group, CMAF, Complexo Interdisciplinar, Lisboa Codex, Portugal, GADGET, Lisboa, Portugal

Jorge M. Pacheco

pacheco@cii.fc.ul.pt

Affiliations Departamento de Matemática e Aplicações, Universidade do Minho, Braga, Portugal, ATP-Group, CMAF, Complexo Interdisciplinar, Lisboa Codex, Portugal, GADGET, Lisboa, Portugal

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: SVS FCS JMP. Performed the experiments: SVS FCS JMP. Analyzed the data: SVS FCS JMP. Contributed reagents/materials/analysis tools: SVS FCS JMP. Wrote the paper: SVS FCS JMP.