@article{SM_2007_198_9_a1, author = {V. P. Burichenko}, title = {The 2-cohomology of the group $\Omega^-(4,q)$ with coefficients in the natural module}, journal = {Sbornik. Mathematics}, pages = {1247--1260}, publisher = {mathdoc}, volume = {198}, number = {9}, year = {2007}, language = {en}, url = {http://geodesic.mathdoc.fr/item/SM_2007_198_9_a1/} }