@article{GDZPPN001173065, title = {Discrete, Linear Approximation Problems in Polyhedral Norms.}, journal = {Numerische Mathematik}, volume = {26}, year = {1976}, pages = {179-190}, zbl = {0335.65003}, url = {http://dml.mathdoc.fr/item/GDZPPN001173065} }
Osborne, M.R.; Anderson, D.H. Discrete, Linear Approximation Problems in Polyhedral Norms.. Numerische Mathematik, Tome 26 (1976) pp. 179-190. http://gdmltest.u-ga.fr/item/GDZPPN001173065/