%0 Journal Article %A B. P. Paneah %T Nonelliptic boundary value problems and related Lie algebras %J Doklady Akademii Nauk %D 1985 %P 49-53 %V 283 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1985_283_1_a10/ %G ru %F DAN_1985_283_1_a10