1. The structure of gossypol;Campbell;J Amer Chem Soc,1937
2. A practical method for testing the spermicidal action of chemical contraceptives;Sander;Hum Fertil,1941
3. A practical method for testing the spermicidal action of chemical contraceptives;Sander;Hum Fertil,1941
4. Animal testing for potency of vaginal contraceptives: Development of a primate model;Zaneveld,1979