%0 Journal Article %A A. V. Bitsadze %T Exact solutions of some classes of nonlinear partial differential equations %J Differencialʹnye uravneniâ %D 1981 %P 1774-1778 %V 17 %N 10 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1981_17_10_a5/ %G ru %F DE_1981_17_10_a5