%0 Journal Article %A V. N. Koshelev %T On the problem of divisibility of sources and spaces %J Doklady Akademii Nauk %D 1993 %P 12-14 %V 332 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1993_332_1_a2/ %G ru %F DAN_1993_332_1_a2