%0 Journal Article %A V. A. Bulychev %A F. F. Frolov %T Boundary value problems for generalized differential equations %J Sbornik. Mathematics %D 1989 %P 267-287 %V 63 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/SM_1989_63_2_a0/ %G en %F SM_1989_63_2_a0