1. Arias-Stella, J. (1954).Arch. Pathol.,58, 112–116.
2. Benoit, J., Rodway, M., Yuen, B.H. & Leung, P.C.K. (1988).Am. J. Obstet. Gynecol. 158, 328–332.
3. Bhaumick, F., George, D. & Bala, R.M. (1992).J. Clin. Endocrinol. Metab.,74, 1005–1011.
4. Brenner, R.M. & Slayden, O.D. (1994). In:The Physiology of Reproduction. Knobil, E. & Neill, J.D. (eds.). Raven Press: New York. pp. 541–569.
5. Carlone, D.L. & Rider, V. (1994)Biol. Reprod.,49, 653–665.