%0 Journal Article %A V. E. Balabaev %T On a class of first-order multidimensional elliptic systems %J Differencialʹnye uravneniâ %D 1992 %P 628-637 %V 28 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1992_28_4_a9/ %G ru %F DE_1992_28_4_a9