Babijchuk, V. G. “Quantitative Estimation of Antigen-Specific Cells in Human Blood After Rhythmic Cold Effect”. Problems of Cryobiology and Cryomedicine, vol. 19, no. 2, July 2009, pp. 143-5, http://cryo.org.ua/journal/index.php/probl-cryobiol-cryomed/article/view/269.