1. A practical method for testing the spermicidal action of chemical contraceptives;Sander;Hum Fertil,1941
2. Evaluation of a new contraceptive;Sobrero;Fertil Steril,1960
3. Intravaginal contraceptive study. Phase II. Physiology;Johnson;West J Surg Obstet Gynecol,1963
4. In vivo evaluation of an effervescent intravaginal contraceptive insert by simulated coital activity;Masters;Fertil Steril,1979
5. A comparison of the in vivo contraceptive potencies of a variety of marketed vaginal contraceptive dosage forms;Homm;Curr Ther Res,1977