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. https://journal.cryo.org.ua/index.php/probl-cryobiol-cryomed/article/view/214.