%0 Journal Article %A B. G. Gabdulkhaev %A S. M. Akhmetov %T Direct methods for solving equations of jet theory %J Differencialʹnye uravneniâ %D 1977 %P 1299-1307 %V 13 %N 7 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1977_13_7_a16/ %G ru %F DE_1977_13_7_a16