%0 Journal Article %A A. I. Kozhanov %T A mixed problem for some classes of nonlinear third-order equations %J Sbornik. Mathematics %D 1983 %P 507-525 %V 46 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/SM_1983_46_4_a4/ %G en %F SM_1983_46_4_a4