%0 Journal Article %A R. D. Bachelis %T On analytical solutions of differential equations in partial derivatives of the third order %J Doklady Akademii Nauk %D 1957 %P 567-570 %V 112 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1957_112_4_a0/ %G ru %F DAN_1957_112_4_a0