@article{MZM_2013_93_6_a10,
     author = {S. A. Pichugov},
     title = {Sharp {Constant} in {Jackson's} {Inequality} with {Modulus} of {Smoothness} for {Uniform} {Approximations} of {Periodic} {Functions}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {932--938},
     publisher = {mathdoc},
     volume = {93},
     number = {6},
     year = {2013},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2013_93_6_a10/}
}