%0 Journal Article %A V. A. Matveev %T Perfect irreducible pre-images of topological spaces %J Vestnik Moskovskogo universiteta. Matematika, mehanika %D 1988 %P 80-82 %N 4 %U http://geodesic.mathdoc.fr/item/VMUMM_1988_4_a20/ %G ru %F VMUMM_1988_4_a20