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@article{DAN_1969_186_5_a7, author = {V. Z. Polyakov}, title = {Proximally open mappings of metric spaces}, journal = {Doklady Akademii Nauk}, pages = {1012--1015}, publisher = {mathdoc}, volume = {186}, number = {5}, year = {1969}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1969_186_5_a7/} }
V. Z. Polyakov. Proximally open mappings of metric spaces. Doklady Akademii Nauk, Tome 186 (1969) no. 5, pp. 1012-1015. http://geodesic.mathdoc.fr/item/DAN_1969_186_5_a7/