%0 Journal Article %A L. G. Mustafaev %A R. B. Feizullaev %T Semiheaps of multivalued mappings of topological spaces %J Doklady Akademii Nauk %D 1977 %P 777-779 %V 232 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1977_232_4_a11/ %G ru %F DAN_1977_232_4_a11