1. ICH Harmonised Tripartite Guideline S5(R2). Guideline for Industry: Detection of Toxicityto Reproduction for Medicinal Products & Toxicity to Male Fertility, November 2005.
2. The vagina as a route for drug delivery: a review;Srikrishna;Int. Urogynecol. J.,2013
3. The transport of chemicals in semen;Klemmt;Birth Defects Res. (Part B),2005
4. Cyclic changes in cervical mucus, and its practical importance;Guttmacher;Hum. Fertil.,1940
5. The immediate postcoital test;Sobrero;Fertil. Steril.,1962