%0 Journal Article %A A. V. Ivanov %T $(A,\vec0)$-elliptic equations with a~weak degeneracy %J Zapiski Nauchnykh Seminarov POMI %D 1981 %P 75-84 %V 112 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZNSL_1981_112_a6/ %G ru %F ZNSL_1981_112_a6