Panchenko, Oleg A. “Methodology of Cryotherapy Use in Medical Practice”. Problems of Cryobiology and Cryomedicine 29, no. 2 (June 20, 2019): 137-147. Accessed September 26, 2020. http://journal.cryo.org.ua/index.php/probl-cryobiol-cryomed/article/view/1528.