1. Relationship of weight change to required size of vaginal diaphragm;Fiscella;Nurse Practitioner July/Aug,1982
2. Das pessarium occlusivum und dessen application: supplement zu “Uber facultative sterilitat, etc.”;Mensinga,1882
3. The diaphragm and other intravaginal barriers;Wortman;Popul Rep Series H,1976
4. The practice of contraception;Sanger,1931
5. Techniques of conception control;Dickinson,1931