A. I. Osetskiy, V. I. Grischenko, A. S. Snurnikov, I. Y. Shabanov, and G. A. Babijchuk, “Cryosublimation Fractionating of Biological Material”, Probl Cryobiol Cryomed, vol. 16, no. 2, pp. 230–240, Jun. 2006.