求幾篇經(jīng)濟學(xué)的文章（或書的主要內(nèi)容觀點介紹）
1.Modigliani F.New developments on the oligopoly front
2.Spence A M.Entry,capacity,investment and oligopolistic pricing
3.Dixit A.A model of duopoly suggesting a theory of entry barriers
4.Dixit A.The role of investment in entry deterrence
5.Milgrom P,Roberts J .Limit pricing and entry under incomplete information：an equilibrium analysis
6.Gilbert R,Newbery D.Preemptive patenting and the persistence of monopoly
7.Bae H.Product innovation,selloff,and entry deterrence
有幾篇是幾篇啊 英文版中文版都可以啊