1. Allison, P.D. (1984) Event History Analysis: Regression for Longitudinal Event Data, Sage university papers, Quantitative Applications in the Social Sciences, No. 07-046, Beverly Hills, CA: Sage Publications.
2. Allison, P.D. (1995) Survival Analysis Using SAS: A Practical Guide, Cary, NC: SAS Institute Inc.
3. A.M. Best Company Inc (2009) U.S. Property/Casualty 1969-2008 Impairment Review: Real Estate's Title Insurers Lead 2008 P/C Financial Impairments, Oldwick, NJ: A.M. Best.
4. A.M. Best Company Inc (2010) U.S. Property/Casualty 1969-2009 Impairment Review: P/C Financial Impairments Rise Markedly Since ‘07 Low, Oldwick, NJ: A.M. Best.
5. A.M. Best Company Inc (2011) U.S. Property/Casualty 1969-2010 Impairment Review: Commercial Lines Dominated Financial Impairments in 2010, Oldwick, NJ: A.M. Best.