%0 Journal Article %A M. M. Shumafov %T Diffeomorphisms of three-dimensional discontinuous systems %J Vestnik Moskovskogo universiteta. Matematika, mehanika %D 1984 %P 85-88 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/VMUMM_1984_6_a22/ %G ru %F VMUMM_1984_6_a22