4Hoff Karla,Joseph E Stiglitz.Introduction:Imperfect Information and Rural Credit Markets:Puzzles and Policy PerspectivesThe World Bank Economic Review,1990.
5Baneree W,Harvey P W.The role of community banks in the U.S.economyFederal Reserve Ban of Kansas City Economic Review,2003.
6Keeton W.Does market size structure affect competitionthe case of small business bankingBoard of GovernorsFinance and Eco-nomics Discussing Serviceworking paper,2001.