@article{GDZPPN001169254, title = {On Approximation by Sums of Chebyshev Norms.}, journal = {Numerische Mathematik}, volume = {15}, year = {1970}, pages = {243-247}, zbl = {0222.65013}, url = {http://dml.mathdoc.fr/item/GDZPPN001169254} }
BACOPOULOS, A. On Approximation by Sums of Chebyshev Norms.. Numerische Mathematik, Tome 15 (1970) pp. 243-247. http://gdmltest.u-ga.fr/item/GDZPPN001169254/