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@article{DAN_1980_255_6_a7, author = {R. Oinarov and M. Otelbaev}, title = {A criterion for a {Urysohn} operator to be a contraction}, journal = {Doklady Akademii Nauk}, pages = {1316--1318}, publisher = {mathdoc}, volume = {255}, number = {6}, year = {1980}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1980_255_6_a7/} }
R. Oinarov; M. Otelbaev. A criterion for a Urysohn operator to be a contraction. Doklady Akademii Nauk, Tome 255 (1980) no. 6, pp. 1316-1318. http://geodesic.mathdoc.fr/item/DAN_1980_255_6_a7/