%0 Journal Article %A Yu. V. Billing %T On a homomorphic image of a special Lie~algebra %J Sbornik. Mathematics %D 1989 %P 319-322 %V 64 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/SM_1989_64_2_a1/ %G en %F SM_1989_64_2_a1