1. Sittisomwong, T.; Suneja, A.; Kudelka, A.P.; Verschraegen, C.F.; Kavanagh, J.J.Eur. J. Gynaecol. Oncol. 2000,21, 348–354.
2. Prestwood, K.M.; Kenny, A.M.; Unson, C.; Kulldorff, M.J. Clin. Endo. & Metab. 2000,85, 4462–4469.
3. Haning, R.V.; Levin, R.M.; Behrman, H.R.; Kase, N.G.; Speroff, L.J. Obst. Gynaecol. 1979,54 442–447.
4. Ishida, J.; Kai, M.; Ohkura, Y.J. Chromtogr. 1988,431(2), 249–257.
5. Stefanakis, A.; Boscos, C.; Alexopoulos, C.; Krambovitis, E.Anim. Reprod. Sci. 2000,58 (1,2), 127–135.