%0 Journal Article %A A. D. Dzhabrailov %T An investigation of certain classes of second order quasilinear elliptic equations.~II, III %J Differencialʹnye uravneniâ %D 1970 %P 889-899 %V 6 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1970_6_5_a12/ %G ru %F DE_1970_6_5_a12