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@article{IVM_1972_9_a0, author = {L. I. Bausov}, title = {The approximation of differentiable functions by certain linear operators}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {3--9}, publisher = {mathdoc}, number = {9}, year = {1972}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1972_9_a0/} }
L. I. Bausov. The approximation of differentiable functions by certain linear operators. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 9 (1972), pp. 3-9. http://geodesic.mathdoc.fr/item/IVM_1972_9_a0/