MEASURING COST EFFICIENCY IN THE PROPERTY-LIABILITY INSURANCE INDUSTRY - THE MEASUREMENT OF EFFICIENCY IN LIFE-INSURANCE - ESTIMATES OF A MIXED NORMAL GAMMA ERROR MODEL - X-EFFICIENCY IN THE UNITED-STATES LIFE-INSURANCE INDUSTRY - COMMENTS
S. Grosskopf, MEASURING COST EFFICIENCY IN THE PROPERTY-LIABILITY INSURANCE INDUSTRY - THE MEASUREMENT OF EFFICIENCY IN LIFE-INSURANCE - ESTIMATES OF A MIXED NORMAL GAMMA ERROR MODEL - X-EFFICIENCY IN THE UNITED-STATES LIFE-INSURANCE INDUSTRY - COMMENTS, Journal of banking & finance, 17(2-3), 1993, pp. 511-513