Existence of equilibria in quantum Bertrand-Edgeworth duopoly game. - Yohei Sekiguchi; Kiri Sakahara; Takashi Sato (Quantum Inf. Process., 2012)

A generalization of Campbell and Kelly's trade-off theorem. - Susumu Cato; Yohei Sekiguchi (Soc. Choice Welf., 2012)