%0 Journal Article %A A. V. Ershov %T On homotopy properties of bundles with a structural group of automorphisms of matrix algebras %J Vestnik Moskovskogo universiteta. Matematika, mehanika %D 1999 %P 56-60 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/VMUMM_1999_6_a8/ %G ru %F VMUMM_1999_6_a8