%0 Journal Article %A V. V. Sergeichuk %T Classification problems for systems of forms and linear mappings %J Izvestiya. Mathematics %D 1988 %P 481-501 %V 31 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM2_1988_31_3_a2/ %G en %F IM2_1988_31_3_a2