3A N Berger,G F Udell. Relationship lending and lines of credit in small firm finance[J]. Journal of Business,1995,68(3).
4Jith Jayaratne,John Wolken. How important are small banks to small business lending? New evidence from a survey of small firms[J]. Journal of Banking and Finance, 1999,23.
5Jose Lopez-Gracia,Cristina Aybar-Arias. An empirical approach to the financial behavior of small and medium sized companies[J]. Small Business Economics,2000,14.
6Banerjee A V, Besley T, Guinnane T W. The neighbor's keeper: the design of a credit cooperative with theory and a test[J]. Quarterly Journal of Economics, 1994,109.
