Akin, Ethan, Sławomir Plaskacz, and Joanna Zwierzchowska. 2019. “Smale Strategies for the N-Person Iterated prisoner’s Dilemma”. Topological Methods in Nonlinear Analysis 53 (1):351-61. https://apcz.umk.pl/TMNA/article/view/TMNA.2019.001.