Geodesic
Chebyshev sets and some generalizations of them
Matematičeskie zametki, Tome 3 (1968) no. 1, pp. 59-69 
L. P. Vlasov. Chebyshev sets and some generalizations of them. Matematičeskie zametki, Tome 3 (1968) no. 1, pp. 59-69. http://geodesic.mathdoc.fr/item/MZM_1968_3_1_a7/
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     title = {Chebyshev sets and some generalizations of them},
     journal = {Matemati\v{c}eskie zametki},
     pages = {59--69},
     year = {1968},
     volume = {3},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1968_3_1_a7/}
}
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Voir la notice de l'article provenant de la source Math-Net.Ru

In this note we generalize and strengthen certain results contained in [12]. For example, we establish that, in a uniformly convex and smooth Banach space, any locally compact Chebyshev set is convex