Marchenko, V.S., Marchenko, L.N., Yermakova, N.Y., Sleta, I.V. and Sandomirsky, B.P. 2009. Effect of Cryoapplication on Fractal Organization of Ultrastructure of Parodontium Soft Tissues in Destruction and Penumbra Zones. Problems of Cryobiology and Cryomedicine. 19, 3 (Nov. 2009), 301–311.