Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{NUMA_1977__28_132479, author = {M.R. Osborne and D.H. Anderson}, title = {Discrete, {Nonlinear} {Approximation} {Problems} in {Polyhedral} {Norms.}}, journal = {Numerische Mathematik}, pages = {143--156}, publisher = {mathdoc}, volume = {28}, year = {1977}, zbl = {0342.65004}, url = {http://geodesic.mathdoc.fr/item/NUMA_1977__28_132479/} }
M.R. Osborne; D.H. Anderson. Discrete, Nonlinear Approximation Problems in Polyhedral Norms.. Numerische Mathematik, Tome 28 (1977), pp. 143-156. http://geodesic.mathdoc.fr/item/NUMA_1977__28_132479/