Cheremskoy, A. K., Yu. V. Nikitchenko, and V. V. Chizhevsky. 2008. “Effect of Cryopreserved Placenta Extract on Antioxidant System Activity in Rat Tissues After General Cooling”. Problems of Cryobiology and Cryomedicine 18 (1):77-80. http://cryo.org.ua/journal/index.php/probl-cryobiol-cryomed/article/view/455.