@article{10_4153_CMB_1979_046_x,
     author = {Bennett, Colin and Rudnick, Karl and Vaaler, Jeffrey D.},
     title = {Note on {Best} {Approximation} of |x|},
     journal = {Canadian mathematical bulletin},
     pages = {363--366},
     year = {1979},
     volume = {22},
     number = {3},
     doi = {10.4153/CMB-1979-046-x},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1979-046-x/}
}