1. The biologic characteristics of the normal vagina;Rakoff;Am J Obstet Gynecol,1944
2. Vaginal acidity and pH. A review;Lang;Obstet Gynecol,1955
3. Postpartum cervical cytology;Kauffman;Obstet Gynecol,1958
4. Human sexual response;Masters,1966
5. Vulvar disease;Friedrich,1983