Petrushko, M. P. “Role of Cell Cycles Phases and Pronuclei Morphology in Viability of Native and Cryopreserved Zygotes”. Problems of Cryobiology and Cryomedicine 15, no. 2 (June 15, 2005): 202–206. Accessed April 24, 2024. https://cryo.org.ua/journal/index.php/probl-cryobiol-cryomed/article/view/633.