Robert Hoffmann. Twenty Years on: The Evolution of Cooperation Revisited. J. Artificial Societies and Social Simulation, 3(2), 2000. [doi]
@article{Hoffmann00, title = {Twenty Years on: The Evolution of Cooperation Revisited}, author = {Robert Hoffmann}, year = {2000}, url = {http://jasss.soc.surrey.ac.uk/3/2/forum/1.html}, researchr = {https://researchr.org/publication/Hoffmann00}, cites = {0}, citedby = {0}, journal = {J. Artificial Societies and Social Simulation}, volume = {3}, number = {2}, }