1Charnels A,Cooper W,Rhodes:Measuring the efficiency of decision making units[l].European Journal of Operational Research, 1978 (6).
2Alhadeff D ..A.Monopoly and competition in commercial banking Berkeley[J].University of Califor- nia Press, 1954(3).
3P. Andersen and N. C. Petersen..A procedure for ranking efficient units in Data Envelopment Analysis [J].Management Science, 1993(10).
4Zaim:The Effect of financial liberalization on the efficiency of Turkish commercial banks[J].Applied Fi- nancial Economics, 1995(5).
5Berger A.N, Humphrey D.B:Efliciency of finan- cial institutions:international survey and directions for future research [J].European Journal of Operational Research, 1997 (9).
