1. The serial cultivation of human diploid cell strains
2. The limited in vitro lifetime of human diploid cell strains
3. Review Lectures on Senescence - II. Heterochronic transplantation in the study of ageing
4. Symposium on Cellular Basis and Ætiology of Late Somatic Effects of Ionising Radiation;Koller,1962
5. Ciba Foundation Symposium on Hæmopoiesis; Cell Production and its Regulation;Lajtha,1960