Dobrunova, I. V., N. N. Chub, and M. P. Petrushko. “Culturing of Granulosis and Cumulus Cells After Hypothermic Storage”. Problems of Cryobiology and Cryomedicine, vol. 18, no. 1, May 2008, pp. 98-100, https://journal.cryo.org.ua/index.php/probl-cryobiol-cryomed/article/view/461.