%0 Journal Article %A I. M. Sonin %T Classes of uniqueness for degenerate parabolic equations %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1970 %V 25 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/RM_1970_25_1_a9/ %G ru %F RM_1970_25_1_a9