1. J. P.Greenhill: “The 1944 Year Book of Obstetrics and Gynecology” page490.
2. The Treatment of Certain Types of Uterine Hæmorrhage;Cuscaden W. G.;The Medical Journal of Australia,1939
3. C.MazerandS. L.Israel: “Diagnosis and Treatment of Menstrual Disorders and Sterility” 1941 page291.
4. E.Novak: “Gynecology” Second Edition 1944 page586.
5. Dysfunctional Uterine Bleeding;Karnaky K. J.;The Journal of Clinical Endocrinology,1943