%0 Journal Article %A A. M. Abdrakhmanov %T The Dirichlet problem for a degenerate not-strongly elliptic system of two second-order equations %J Differencialʹnye uravneniâ %D 1980 %P 3-12 %V 16 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1980_16_1_a0/ %G ru %F DE_1980_16_1_a0