Denisova, O.N., Zhegunov, G.F. and Babijchuk, L.A. 2005. Cryopreservation of Animal’s Erythrocytes under Dimethyl Sulfoxide, Polyethylene Oxide and Glycerol Protection. Problems of Cryobiology and Cryomedicine. 15, 2 (Jun. 2005), 195–201.