1. 3rd edn Cesarean Childbirth, publication 82-2067 1981 National Institutes of Health Bethesda, MD
2. Trends and variations in the use of caesarean delivery
3. Conservation in obstetrics;Craigin;NY State Med J,1916
4. Oxytocin during labor after previous cesarean section: Results of a multicenter study;Flamm;Obstet Gynecol,1987
5. Vaginal delivery in patients with a prior cesarean section;Lavin;Obstet Gynecol,1982