求助英文文献两篇：
1－Costly monitoring, financial intermediation, and equilibrium credit rationing
Journal of Monetary Economics ，Volume 18, Issue 2, September 1986, Pages 159-179
链接如下：http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6VBW-4CB77FT-46&_user=1962347&_origUdi=B6VCY-45F90PM-9H&_fmt=high&_coverDate=09%2F30%2F1986&_rdoc=1&_orig=article&_acct=C000055629&_version=1&_urlVersion=0&_userid=1962347&md5=9ba463ca5d88247694cf0e0e17919113

2－Financial intermediation : Delegated monitoring and long-term relationship
Journal of Banking & FinanceVolume 13, Issue 1, March 1989, Pages 9-20
链接如下：http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6VCY-45F90PM-9H&_user=1962347&_coverDate=03%2F31%2F1989&_rdoc=1&_fmt=high&_orig=search&_sort=d&_docanchor=&view=c&_searchStrId=1238043704&_rerunOrigin=google&_acct=C000055629&_version=1&_urlVersion=0&_userid=1962347&md5=61a83c85aed2eb5ecaa44ee2ee1e27c8