@article { vukov13, journal = {PLoS Computational Biology}, keywords = {Multi-Agent Societies;Game Theory;Miscellaneous;}, number = {1}, pages = {e1002868}, title = {Reward from Punishment Does Not Emerge at All Costs}, volume = {9}, year = {2013}, author = {Jeromos Vukov and Flávio L. Pinheiro and Francisco C. Santos and Jorge M. Pacheco} }