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@article{MZM_1994_56_2_a1, author = {V. I. Ivanov}, title = {Approximation of functions in spaces $L_p$}, journal = {Matemati\v{c}eskie zametki}, pages = {15--40}, publisher = {mathdoc}, volume = {56}, number = {2}, year = {1994}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1994_56_2_a1/} }
V. I. Ivanov. Approximation of functions in spaces $L_p$. Matematičeskie zametki, Tome 56 (1994) no. 2, pp. 15-40. http://geodesic.mathdoc.fr/item/MZM_1994_56_2_a1/