%0 Journal Article %A Ya. A. Roǐtberg %A V. Serdiuk %T Theory of solvability in generalized functions for elliptic problems with a~parameter, for general systems of equations %J Trudy Moskovskogo matematičeskogo obŝestva %D 1990 %P 229-258 %V 53 %I mathdoc %U http://geodesic.mathdoc.fr/item/MMO_1990_53_a7/ %G ru %F MMO_1990_53_a7