@article{IVM_1977_8_a1,
     author = {L. I. Bausov},
     title = {Approximation in the mean of differentiable functions by certain trigonometric polynomials},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {9--18},
     publisher = {mathdoc},
     number = {8},
     year = {1977},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1977_8_a1/}
}