%0 Journal Article %A N. A. Sidorov %T The Cauchy problem for a certain class of differential equations %J Differencialʹnye uravneniâ %D 1972 %P 1521-1524 %V 8 %N 8 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1972_8_8_a27/ %G ru %F DE_1972_8_8_a27