@article{GDZPPN001177613, title = {Unicity of Best One-Sided L1-Approximations}, journal = {Numerische Mathematik}, volume = {39}, year = {1982}, pages = {229-244}, zbl = {0492.41051}, url = {http://dml.mathdoc.fr/item/GDZPPN001177613} }
Strauß, H. Unicity of Best One-Sided L1-Approximations. Numerische Mathematik, Tome 39 (1982) pp. 229-244. http://gdmltest.u-ga.fr/item/GDZPPN001177613/