1. The age distribution of cancer and a multi-stage theory of carcinogenesis;Armitage, P.; Doll, R.;Brit. J. Cancer,1954
2. A two-stage theory of carcinogenesis in relation to the age distribution of human cancer;Armitage, P.; Doll, R.;Ibid,1957
3. On the incidence of carcinoma of the prostate;Ashley, D.J.B.;J. Path. Bact,1965
4. The biological status of carcinoma in-situ of the uterine cervix;Ashley, D.J.B.;J. Obstet. Gynaec. Brit. Cwlth,1966
5. Evidence for the existence of two forms of cervical carcinoma;Ashley, D.J.B.;Ibid,1966