In this paper, we discussed the vertically merger behavior in the duopolistic upstream market and also duopolistic downstream market by the case of AOL merger the Time Warner Inc..

• 本文主要以美国在线与时代华纳的兼并案为例子 ,考虑双寡头垄断的上游企业和双寡头垄断的下游企业市场上发生的纵向兼并行为。