Shamshidin, A. ., O. . Alshinbaev, and A. . Mussabekov. “Increase in the Efficiency Impregnating Sperm serie’s Capabilities Out of the Organism”. Scientific Journal of Zoology, vol. 6, no. 11, Nov. 2017, pp. 68-72, http://sjournals.com/index.php/sjz/article/view/254.