%0 Journal Article %A V. S. Blinchevskii %T The {\v C}aplygin theorem for a first order quasilinear partial differential equation %J Differencialʹnye uravneniâ %D 1969 %P 2276-2277 %V 5 %N 12 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1969_5_12_a16/ %G ru %F DE_1969_5_12_a16