Ventskovska, O. A., O. V. Shylo, and G. A. Babiychuk. 2011. “Sleep After Rhythmic Cold Effects”. Problems of Cryobiology and Cryomedicine 21 (1):10-21. https://cryo.org.ua/journal/index.php/probl-cryobiol-cryomed/article/view/150.