Babijchuk, L. A., O. V. Kudokotseva, P. M. Zubov, V. V. Ryazantsev, O. L. Zubova, and T. M. Gurina. 2008. “Cord Blood Autobanks: Cryopreservation and Testing Methods”. Problems of Cryobiology and Cryomedicine 18 (4):524-26. http://journal.cryo.org.ua/index.php/probl-cryobiol-cryomed/article/view/368.