Cite

    Rikard Roitto. “Dangerous but contagious altruism: recruitment of group members and reform of cooperation style through altruism in two modified versions of Hammond and Axelrod's simulation of ethnocentric cooperation.” Religion, brain & behavior, vol. 6, no. 2, 2016, pp. 154–168. http://access.bl.uk/ark:/81055/vdc_100033975520.0x000041