%0 Journal Article %A E. V. Moiseev %T A theorem on homotopy lifting and characterization of certain soft maps %J Vestnik Moskovskogo universiteta. Matematika, mehanika %D 1991 %P 45-47 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/VMUMM_1991_1_a8/ %G ru %F VMUMM_1991_1_a8