@article{MZM_2013_93_1_a1,
     author = {V. S. Balaganskii},
     title = {On the {Continuity} of the {Sharp} {Constant} in the {Jackson--Stechkin} {Inequality} in the {Space~}$L^2$},
     journal = {Matemati\v{c}eskie zametki},
     pages = {13--28},
     publisher = {mathdoc},
     volume = {93},
     number = {1},
     year = {2013},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2013_93_1_a1/}
}