%0 Journal Article %A V. Z. Polyakov %T Uniformities on $X$ and topologies on $\mathfrak{H}(\mathfrak{H}(X))$ %J Doklady Akademii Nauk %D 1968 %P 28-29 %V 179 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1968_179_1_a5/ %G ru %F DAN_1968_179_1_a5