4Berger, A.N., Humphrey, D.B.1997:Efficiency of financial institutions:interntional survey and directions for future research,European Journal of Operational Research 82(2).
5Jeffrey Wurgler:Financial Markets And the Allocation of capital,Journal of financial econnmics, 2000,58.
6E.S.Shaw:Financial.Deepening in Economics Developme nt, [M]NewYork:Oxfod university Press, 1973.