Zubova, O. L., P. M. Zubov, L. A. Babijchuk, and V. V. Ryazantsev. 2008. “Cryopreservation of Whole Cord Blood”. Problems of Cryobiology and Cryomedicine 18 (1):58-61. http://cryo.org.ua/journal/index.php/probl-cryobiol-cryomed/article/view/450.