Shilo, A. V., O. A. Ventskovska, and G. A. Babiychuk. 2010. “Changes of Sleep Structure in Rats After Artificial Hypometabolic State”. Problems of Cryobiology and Cryomedicine 20 (1):25-33. http://cryo.org.ua/journal/index.php/probl-cryobiol-cryomed/article/view/214.