%0 Journal Article %A N. E. Tovmasyan %T Some boundary value problems for a system of second-order elliptic equations which do not satisfy Lopatinskii’s condition %J Doklady Akademii Nauk %D 1965 %P 1028-1031 %V 160 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1965_160_5_a14/ %G ru %F DAN_1965_160_5_a14