1. Discussion of Lee (2000);Alho;North American Actuarial Journal,2000
2. Some further experiments in the use of the incomplete gamma function for the calculation of actuarial functions;Beard;Journal of the Institute of Actuaries,1952
3. Beard, R.E., 1959. Note on some mathematical mortality models. In: Wolstenholme, C.E.W., Connor, M.O. (Eds.), The Lifespan of Animals, CIBA Foundation Colloquia on Ageing, vol. 5. Boston, pp. 302–311.
4. Beard, R.E., 1971. Sone aspects of theories of mortality, cause of death analysis, forecasting and stochastic processes. In: Brass, W. (Ed.), Biological Aspects of Demography. Taylor and Francis, London, pp. 57–68.
5. Benjamin, B., Soliman, A.S., 1993. Mortality on the Move, Actuarial Education Service, Oxford.