Survivorship and the Size Distribution of the Property-Liability Insurance Industry
研究了财产责任保险公司的生存率与规模分布之间的关系，发现规模较大的公司生存率更高，但规模分布呈现右偏特征。
David Appel, John D. Worrall, Richard J. Butler, Survivorship and the Size Distribution of the Property-Liability Insurance Industry, The Journal of Risk and Insurance, Vol. 52, No. 3 (Sep., 1985), pp. 424-440