1. Oral prostaglandins in the induction of labour;Barr;Brit. med. J.,1972
2. Induction of labour with prostaglandin E2 tablets;Basu;J. int. med. Res.,1975
3. Pelvic scoring for elective induction;Bishop;Obstet. and Gynec.,1964
4. Déclenchement du travail à l'aide de prostaglandines E1, E2, F1 et F2;Caballero;Rev. Franç Gynéc.,1974
5. Oral prostaglandins (PG) E2 before amniotomy as a predictive test of successful term elective induction of labor;De Witte,1976