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@article{IVM_1961_5_a0, author = {D. L. Berman}, title = {Some remarks on the problem of speed of convergence of polynomial operators}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {3--5}, publisher = {mathdoc}, number = {5}, year = {1961}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1961_5_a0/} }
D. L. Berman. Some remarks on the problem of speed of convergence of polynomial operators. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 5 (1961), pp. 3-5. http://geodesic.mathdoc.fr/item/IVM_1961_5_a0/