@inproceedings { almeida11, booktitle = {4th Congress of the European Federationfor Primatology 3rd Iberian Primatological Congress, Folia Primatologica}, journal = {Folia Primatologica }, keywords = {Multi-Agent Societies;Game Theory;}, number = {6}, pages = {321}, title = {Individual Cognition and the Complexity of Cooperation}, volume = {82}, year = {2011}, author = {Andre F. Almeida and João A. Moreira and Marta D. Santos and Jeromos Vukov and Francisco C. Santos and Claudia Sousa and Jorge M. Pacheco} }