@article{TIMM_1998_5_a13,
     author = {A. G. Babenko},
     title = {Exact {Jackson{\textendash}Stechkin} inequality in the space $L^2(\mathbb R^m)$},
     journal = {Trudy Instituta matematiki i mehaniki},
     pages = {183--198},
     year = {1998},
     volume = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TIMM_1998_5_a13/}
}