Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1958_121_4_a2, author = {N. V. Efimov and S. B. Stechkin}, title = {Chebyshev sets in {Banach} spaces}, journal = {Doklady Akademii Nauk}, pages = {582--585}, publisher = {mathdoc}, volume = {121}, number = {4}, year = {1958}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1958_121_4_a2/} }
N. V. Efimov; S. B. Stechkin. Chebyshev sets in Banach spaces. Doklady Akademii Nauk, Tome 121 (1958) no. 4, pp. 582-585. http://geodesic.mathdoc.fr/item/DAN_1958_121_4_a2/