8Berger, A. N., Humphrey, D.B., 1997. Efficiency of Financial Institutions: International Survey and Directions for Future Research.European Journal of Operation Research (special issue)
9Coelll, T., 1996. A Guide to DEAP Version 2.1 :A Data Envelopment Analysis (Computer) Program. CEPA Working Paper 96/08.
10Nunamaker,T. R., 1985. Using Data Envelopment Analysis to measure the efficiency of non-profit organizations: A critical evaluation. Managerial and Decision Economics 61,50-58.
