@article{MZM_1996_60_5_a1,
     author = {V. I. Berdyshev},
     title = {Generalized polynomial approximation providing the best reference},
     journal = {Matemati\v{c}eskie zametki},
     pages = {658--669},
     year = {1996},
     volume = {60},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1996_60_5_a1/}
}