1. Ethinylestradiol and dl-norgestrel as a post-coital contraceptive;Yuzpe;Fertil. Steril.,1977
2. Post-coital copper IUDs;Lippes;Adv. Plann. Parent.,1979
3. Delayed post-coital IUD insertions;Goldstuck;Contracept. Deliv. Syst.,1983
4. Post-coital contraception;Rowlands;Br. J. Family Planning,1981
5. The copper 7 and post-coital contraception;Tyrer;Adv. Plann. Parent.,1980