@article{MZM_1977_21_3_a6,
     author = {A. I. Stepanets},
     title = {Approximation by {Riesz} sums of periodic functions of {H\"older} classes},
     journal = {Matemati\v{c}eskie zametki},
     pages = {341--354},
     publisher = {mathdoc},
     volume = {21},
     number = {3},
     year = {1977},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1977_21_3_a6/}
}