Evolution of neighborly relations in a spatial IPD game with cooperative players and hostile players. - Hisao Ishibuchi; Tatsuo Nakari; Tomoham Nakashima (CEC, 1999)

Evolution of Strategies in Spatial IPD Games with Structure Demes. - Hisao Ishibuchi; Tatsuo Nakari; Tomoharu Nakashima (GECCO, 2000)