@article{NUMA_1970__16_132031,
     author = {A. BACOPOULOS},
     title = {On {Approximation} by {Sums} of {Chebyshev} {Norms.}},
     journal = {Numerische Mathematik},
     pages = {243--247},
     publisher = {mathdoc},
     volume = {16},
     year = {1970},
     zbl = {0222.65013},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1970__16_132031/}
}