%0 Journal Article %A S. I. Pokhozhaev %T Conservation laws and a priori estimates for certain nonlinear parabolic equations %J Differencialʹnye uravneniâ %D 1970 %P 129-136 %V 6 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1970_6_1_a12/ %G ru %F DE_1970_6_1_a12