@article{DAN_1964_154_1_a10,
     author = {V. P. Motornyi},
     title = {An inequality for the moduli of smoothness of a periodic function with bounded derivative},
     journal = {Doklady Akademii Nauk},
     pages = {45--47},
     year = {1964},
     volume = {154},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1964_154_1_a10/}
}