各位大侠：
       现求助文献：
[size=1.75em]Endogenous switching costs in a duopoly model
[size=1em]Ramon Caminal and Carmen Matutes*

[size=1em][size=1em]Universitat Autònoma de Barcelona, 08193 Bellalerra, Barcelona, Spain
链接地址：

http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6V8P-45F8Y6M-10&_user=4205802&_coverDate=09/30/1990&_rdoc=1&_fmt=high&_orig=search&_origin=search&_sort=d&_docanchor=&view=c&_searchStrId=1572814078&_rerunOrigin=google&_acct=C000062534&_version=1&_urlVersion=0&_userid=4205802&md5=9218bbb27cd9713d21b0f8577e6b2dba&searchtype=a

           十分感激！