@article{1103035754, author = {Phelps, R. R.}, title = {\v Ceby\v sev subspaces of finite codimension in $C(X)$.}, journal = {Pacific J. Math.}, volume = {13}, number = {4}, year = {1963}, pages = { 647-655}, language = {en}, url = {http://dml.mathdoc.fr/item/1103035754} }
Phelps, R. R. Čebyšev subspaces of finite codimension in $C(X)$.. Pacific J. Math., Tome 13 (1963) no. 4, pp. 647-655. http://gdmltest.u-ga.fr/item/1103035754/