1. L. M. Bernstein and I. G. Kovalenko, Probl. Endokrinol., 56, No. 3, 47-51 (2010).
2. E. R. Boiko and A. V. Tkachev, Fiziol. Chel., 20, No. 2, 136-142 (1994).
3. M. A. Kleshchyov, A. V. Osadchuk, N. V. Gutorova, et al., Androl. Genit. Khirurg., No. 2, 56-60 (2011).
4. L. V. Osadchuk, A. V. Popova, O. V. Tumanik, et al., Probl. Reprod., 18, No. 4, 76-79 (2012).
5. V. A. Giagulli, J. M. Kaufman, and A. Vermeulen, J. Clin. Endocrinol. Metab., 79, No. 4, 997-1000 (1994).