%0 Journal Article %A G. I. Laptev %T A third-order quasilinear partial differential equation %J Differencialʹnye uravneniâ %D 1988 %P 1270-1272 %V 24 %N 7 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1988_24_7_a24/ %G ru %F DE_1988_24_7_a24