Pakhomov, A. V., G. A. Bozhok, and T. M. Gurina. “Study of Steroidogenic Potential of Post-Thaw Biological Material of Mature Rats’ Testes”. Problems of Cryobiology and Cryomedicine, vol. 19, no. 1, May 2009, pp. 63-70, http://journal.cryo.org.ua/index.php/probl-cryobiol-cryomed/article/view/288.