The Power of Communication
提出企业可通过秘密监控和低频协调两种方式实现合谋，并借助直观的沟通协议来维持，反驳了在无货币支付的随机价格环境下合谋不可能的观点。
In this paper, I offer two ways in which firms can collude: secret monitoring and infrequent coordination. Such collusion is enforceable with intuitive communication protocols. I make my case in the context of a repeated Cournot oligopoly with flexible production, prices that follow a Brownian motion and no monetary side payments, an environment where it has previously been argued that any collusion is impossible. Trade associations can easily facilitate collusion by mediating communication amongst firms.