Consumer co-operatives constitute a highly successful example of democratic forms of enterprises operating in developed countries. They are usually organized as medium or large-scale firms competing with profit-seeking firms in retail industries. In this paper we model such a situation as a...

Consumer cooperatives constitute a highly successful example of democratic forms of enterprises operating in developed countries. They are usually organized as medium and large-scale firms competing with pro fit-maximizing firms in retail industries. This paper models such situation as a mixed...

This paper proposes a formulation of coalitional payoff possibilities in games with externalities, based on the assumption that forming coalitions can exploit a "first mover advantage". We derive a characteristic function and show that when outside players play their best response...

This paper establishes sufficient conditions for the existence of a stable coalition structure in the "coalition unanimity" game of coalition formation, first defined by Hart and Kurz (1983) and more recently studied by Yi (1997, 2000). Our conditions are defined on the strategic form game used...