References
- Blaustein A. U. Pathology of the Female Genital Tract. Springer Verlag, New York 1977; 404–413
- Jeffcoate N., Sir. Principles of Gynaecology, 4th Edition. Butter-worths, London and Boston 1975; 353–354
- Novak E. R., Woodruff J. D. Novak's Gynecologic and Obstetric Pathology, 8th edition. Saunders, Philadelphia 1979; 573–575