Yurchuk , Taisiia. “Cryopreservation of Immature Oocytes at Germinal Vesicle Stage. When Gamete Maturation Performance Seems to Be Most Appropriate?”. Problems of Cryobiology and Cryomedicine 31, no. 2 (July 15, 2021): 161–167. Accessed October 15, 2021. http://journal.cryo.org.ua/index.php/probl-cryobiol-cryomed/article/view/1730.