Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1971_201_2_a0, author = {V. V. Zhuk}, title = {Some sharp inequalities between uniform best approximations of periodic functions}, journal = {Doklady Akademii Nauk}, pages = {263--265}, publisher = {mathdoc}, volume = {201}, number = {2}, year = {1971}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1971_201_2_a0/} }
V. V. Zhuk. Some sharp inequalities between uniform best approximations of periodic functions. Doklady Akademii Nauk, Tome 201 (1971) no. 2, pp. 263-265. http://geodesic.mathdoc.fr/item/DAN_1971_201_2_a0/