@article{10_4153_CMB_1986_016_9,
     author = {Pinkus, A. and Totik, V.},
     title = {One-Sided {L1} {-Approximation}},
     journal = {Canadian mathematical bulletin},
     pages = {84--90},
     year = {1986},
     volume = {29},
     number = {1},
     doi = {10.4153/CMB-1986-016-9},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1986-016-9/}
}