1. I.U.C.D.s reassessed: a decade of experience;Huber;Population Reports Series B. No. 2,1975
2. Diagnosis and incidence of Neisseria gonorrhoeae in Cape Coloured females in the Western Cape;Finlayson;South African Medical Journal,1974
3. Prevalence of gonorrhoea among women using various methods of contraception;Berger;British Journal of Venereal Diseases,1975