Shilo, A. V., V. V. Lomako, L. M. Samokhina, and G. A. Babijchuk. “Proteinases and Its Inhibitor Activity at Artificial Hypometabolic State in Rats”. Problems of Cryobiology and Cryomedicine, no. 2, June 2004, pp. 17-27, http://cryo.org.ua/journal/index.php/probl-cryobiol-cryomed/article/view/684.