@article{GDZPPN00243167X, title = {On Uniqueness of Best L1-Approximation of Disjoint Intervals.}, journal = {Mathematische Zeitschrift}, volume = {192}, year = {1986}, pages = {507-512}, zbl = {0696.41024}, url = {http://dml.mathdoc.fr/item/GDZPPN00243167X} }
Kroó, András. On Uniqueness of Best L1-Approximation of Disjoint Intervals.. Mathematische Zeitschrift, Tome 192 (1986) pp. 507-512. http://gdmltest.u-ga.fr/item/GDZPPN00243167X/