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@article{TRSPY_1988_181_a15, author = {V. N. Temlyakov}, title = {Estimates for the best bilinear approximations of periodic functions}, journal = {Informatics and Automation}, pages = {250--267}, publisher = {mathdoc}, volume = {181}, year = {1988}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/TRSPY_1988_181_a15/} }
V. N. Temlyakov. Estimates for the best bilinear approximations of periodic functions. Informatics and Automation, Investigations in the theory of differentiable functions of many variables and its applications. Part 12, Tome 181 (1988), pp. 250-267. http://geodesic.mathdoc.fr/item/TRSPY_1988_181_a15/