%0 Journal Article %A A. S. Schwarz %T Homotopic duality for spaces with a group of operators %J Doklady Akademii Nauk %D 1961 %P 43-46 %V 136 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1961_136_1_a10/ %G ru %F DAN_1961_136_1_a10