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@article{AA_1990_2_1_a5, author = {V. V. Peller}, title = {Hankel operators and continuity properties of best approximation operators}, journal = {Algebra i analiz}, pages = {163--189}, publisher = {mathdoc}, volume = {2}, number = {1}, year = {1990}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/AA_1990_2_1_a5/} }
V. V. Peller. Hankel operators and continuity properties of best approximation operators. Algebra i analiz, Tome 2 (1990) no. 1, pp. 163-189. http://geodesic.mathdoc.fr/item/AA_1990_2_1_a5/