Credible Collusion in Spatially Separated Markets*
在无限重复博弈中研究空间分离市场的合谋稳定性，发现运输成本上升反而会破坏合谋协议，与静态模型结论相反。
In an infinitely repeated game, sellers employ a trigger strategy of mutual forbearance from invasion of each other's markets, stabilized against invasion by the threat of Bertrand pricing. Contrary to conventional static models, this article shows stability for a wide range of transportation costs and present value parameters, and that increases in transportation costs tend to destabilize the collusive agreement.