%0 Journal Article %A V. I. Gorbachuk %A M. L. Gorbachuk %T Boundary values of solutions of some classes of differential equations %J Sbornik. Mathematics %D 1977 %P 109-133 %V 31 %N 1 %U http://geodesic.mathdoc.fr/item/SM_1977_31_1_a6/ %G en %F SM_1977_31_1_a6