B. A. Ussipbek, N. T. Ablaikhanova, M. K. Murzakhmetova, V. Isachenko, and J. B. Ryskulova, “Study of qualitative and quantitative indicators of the spermatogenesis for determination of the effectiveness of cryopreservation”, IJBCh, vol. 11, no. 1, pp. 127–132, Aug. 2018.