1. Why consider vaginal drug administration?;Alexander;Fertil. Steril.,2004
2. Vaginal ring hormone delivery systems in contraception and menopause;Ballagh;Clin. Obstet. Gynecol.,2001
3. Fabrication and testing of vaginal contraceptive devices designed for release of prespecified dose levels of steroids;Burton;Contraception,1978
4. Center for Drug Evaluation and Research, 1995. Food and Drug Administration. Guidance for Industry: Immediate Release Solid Oral Dosage Forms. Scale-Up and Postapproval Changes: Chemistry, Manufacturing, and Controls, In Vitro Dissolution Testing, and In Vivo BE Documentation. US Department of Health and Human Services, Food and Drug Administration, Rockville, MD.
5. Fundamentals of controlled-release drug administration;Chien,1982