1. Sterilization in Women;Blacker;Br Med J,1969
2. A Long Term Follow-up of 1,055 Cases of Postpartum Tubal Ligation;Lu;J Obstet Gynaec Br Commonw,1967
3. Puerperal Sterilization;Starr;Am J Obstet Gynecol,1964
4. Tubal Procedures;Siegler,1968
5. Human Sterilization: Techniques of Permanent Conception Control;Dickinson,1950