2Andrew,M.Yuengert.The Measurement of Efficiency in Life Insurance:Estimates of a Mixed Normal-gamma Error Model.Journal of Banking and Finance,1993,(17):483-496.
3Cummins,D,MA Weiss,and H.Zi.Organizational Form and Efficiency:An Analysis of Stock and Mutual Property-Liability Insurers.Management Science,1999,(45):1254-1269.
4Cummins,DJ,S.Tennyson,and MA Weiss.Consolidation and Efficiency in the US Life Insurance Industry.Journal of Banking and Finance,1999,(23):325-357.
5Cummins,D.&Weiss.Measuring Cost Efficiency in the Property-Liability Insurance Industry.Journal of Banking and Finance,1993,(17):463-481.
