@article{MZM_1995_58_3_a12,
     author = {A. S. Belov},
     title = {Some upper bounds of partial sums of a~trigonometric series cannot be sharpened via lower bounds},
     journal = {Matemati\v{c}eskie zametki},
     pages = {447--451},
     publisher = {mathdoc},
     volume = {58},
     number = {3},
     year = {1995},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1995_58_3_a12/}
}