5Conning, Jonathan.Group Lending, Moral Hazard and the Creation of Social Collateral[J].Center for Institutional Reform and the Informal Sector,University of Maryland at College Park, Working Paper No.195 , 1996.
6Stiglitz,Joseph E.and Weiss, Andrew.Credit Rationing in Markets with Imperfect Information[J].American Economic Review. 1981, (71).
8Conning,Jonathan.Group Lending,Moral Hazard and the Creation of Social Collateral [J].Center for Institutional Reform and the Informal Sector,University of Maryland at College Park,Working Paper No.195 , 1996.
9StiglitzJoseph E.and Weiss,Andrew.Credit Rationing in Markets with Imperfect Information [J].American Economic Review. 1981, (71) : 393-410.
10Conning,Jonathan.Group Lending,Moral Hazard and the Creation of Social Collateral. Center for Institutional Reform and the Informal Sector,University of Maryland at College Park,working paper No.195 . 1996