@article{MZM_2014_96_2_a11,
     author = {S. A. Pichugov},
     title = {Exact {Constants} in {Jackson} {Inequalities} for {Periodic} {Differentiable} {Functions} in the {Space~}$L_\infty$},
     journal = {Matemati\v{c}eskie zametki},
     pages = {277--284},
     publisher = {mathdoc},
     volume = {96},
     number = {2},
     year = {2014},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2014_96_2_a11/}
}