@article{CMJ_2002__52_4_a4,
     author = {Vesel\'y, Libor},
     title = {Chebyshev centers in hyperplanes of $c_0$},
     journal = {Czechoslovak Mathematical Journal},
     pages = {721--729},
     publisher = {mathdoc},
     volume = {52},
     number = {4},
     year = {2002},
     mrnumber = {1940053},
     zbl = {1012.41029},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMJ_2002__52_4_a4/}
}