@article{MZM_2000_67_1_a13,
     author = {L. V. Taikov},
     title = {One-sided approximation of functions},
     journal = {Matemati\v{c}eskie zametki},
     pages = {136--140},
     year = {2000},
     volume = {67},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2000_67_1_a13/}
}