1. Ueber die Dauer des Lebens;Weismann,1882
2. An Unresolved Problem in Biology;Medawar,1952
3. Pleiotropy, natural selection and the evolution of senescence;Williams;Evolution,1957
4. Intrinsic Mutagenesis: A Genetic Approach to Ageing;Burnet,1974
5. Evolution of ageing;Kirkwood;Nature,1977