1. Results of epidemiological studies of the return of fertility in ex-users of the pill;Vessey,1979
2. The pill and births: the Jerusalem study;Harlap,1978
3. Oral Contraceptives and Health;Royal College of General Practitioners,1974
4. Fertility after stopping different methods of contraception;Vessey;Br Med J,1978
5. The family planning services;Bone,1978