Voir la notice de l'article provenant de la source Math-Net.Ru
@article{MZM_1979_25_5_a2, author = {A. I. Vasil'ev}, title = {Chebyshev sets and strong convexity of metric linear spaces}, journal = {Matemati\v{c}eskie zametki}, pages = {653--664}, publisher = {mathdoc}, volume = {25}, number = {5}, year = {1979}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1979_25_5_a2/} }
A. I. Vasil'ev. Chebyshev sets and strong convexity of metric linear spaces. Matematičeskie zametki, Tome 25 (1979) no. 5, pp. 653-664. http://geodesic.mathdoc.fr/item/MZM_1979_25_5_a2/