1Gardner L.A. and Grace M.F., 1993, X-efficiency in the US Life Insurance Industry, Journal of Banking and Finance 17, 410-497.
2Hirofumi Fukuyama, 1997, Investigatingproductive Efficiency and Productivity Changes of Japanese Life Insurance Companies, Pacific-Basin Finance Journal, 5, 481-509.
8Avkiran, 1999.The evidence of efficiency gains: The role of mergers and the benefits to the public. Journal of Banking and Finance Vol. 23.pp.991 - 1013.
9Casu and Molyneux, Acomparative study of efficiency in European banking, University of Wales,Working Papers,2000.
10Goelli, T J , 1996, A Guide to DEAF Version 2.1 : A Data Envelopment Analysis(Computer) Program.Center for Efficiency and Productivity Analysis(CEVA) working papers.