%0 Journal Article %A V. V. Proizvolov %T One-to-one mappings on metric spaces %J Doklady Akademii Nauk %D 1964 %P 788-789 %V 158 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1964_158_4_a8/ %G ru %F DAN_1964_158_4_a8