1. Time, Cells and Ageing;Strehler,1962
2. Biomorphose oder Gerontologie?;Buerger;Z. Altersforsch,1957
3. The limited in vitro lifespan of human diploid cell strains;Hayflick;Exp. Cell Res.,1965
4. The maintenance of the accuracy of protein synthesis and its relevance to ageing;Orgel,1963
5. The maintenance of the accuracy of protein synthesis and its relevance to ageing;Orgel,1970