Ramazanov, V. V., O. A. Olejnik, and V. A. Bondarenko. “Cryoprotection of Modified Erythrocytes With Polyethylene Glycol and Dextran”. Problems of Cryobiology and Cryomedicine, vol. 15, no. 4, Dec. 2005, pp. 622-9, https://journal.cryo.org.ua/index.php/probl-cryobiol-cryomed/article/view/1211.