El-Seidy, Essam, and Karim Mohamed. “General Tit-For-Tat Strategy in The Three Players Prisoner’s Dilemma Game”. World Scientific Research 2, no. 1 (December 1, 2015): 1–9. Accessed May 3, 2024. http://asianonlinejournals.com/index.php/WSR/article/view/745.