Yini Geng Yifan Liu Yikang Lu Chen Shen 0006 Lei Shi 0004 Reinforcement learning explains various conditional cooperation. 127182 2022 427 Appl. Math. Comput. https://doi.org/10.1016/j.amc.2022.127182 db/journals/amc/amc427.html#GengLLSS22