@article{MZM_1974_16_1_a18,
     author = {N. S. Vyacheslavov},
     title = {Approximation of the function $|x|$ by rational functions},
     journal = {Matemati\v{c}eskie zametki},
     pages = {163--171},
     year = {1974},
     volume = {16},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1974_16_1_a18/}
}