@article{MZM_2014_95_4_a9,
     author = {J. V. Tikhanov},
     title = {On the {Rate} of {Approximation} of {Singular} {Functions} by {Step} {Functions}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {590--604},
     year = {2014},
     volume = {95},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2014_95_4_a9/}
}