%0 Journal Article %A V. V. Nikulin %T Filtrations of 2-elementary forms and involutions of integral symmetric and skew-symmetric bilinear forms %J Izvestiya. Mathematics %D 1986 %P 159-182 %V 27 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM2_1986_27_1_a8/ %G en %F IM2_1986_27_1_a8