Vasyliev, R. G. “Multipotent Stem Cells of Bulbar Region of Hair Follicle With Properties of Neural Crest Derivatives”. Problems of Cryobiology and Cryomedicine, vol. 22, no. 2, June 2012, pp. 165-8, https://cryo.org.ua/journal/index.php/probl-cryobiol-cryomed/article/view/81.