Stability of Equilibrium in Bertrand and Cournot Duopolies. - Koji Okuguchi; Takeshi Yamazaki (IGTR, 2004)

Aggregate Game and International Fishery with Several Countries. - Koji Okuguchi (OR, 2005)

Global stability of Nash equilibrium in Aggregative Games. - Koji Okuguchi; Takeshi Yamazaki (IGTR, 2014)

Existence of Unique Equilibrium in Cournot Mixed Oligopoly. - Koji Okuguchi; Takeshi Yamazaki (IGTR, 2018)