%0 Journal Article %A V. P. Burichenko %T The 2-cohomology of the group $\Omega^-(4,q)$ with coefficients in the natural module %J Sbornik. Mathematics %D 2007 %P 1247-1260 %V 198 %N 9 %U http://geodesic.mathdoc.fr/item/SM_2007_198_9_a1/ %G en %F SM_2007_198_9_a1