%0 Journal Article %A L. I. Bausov %T Approximation in the mean of differentiable functions by certain trigonometric polynomials %J Izvestiâ vysših učebnyh zavedenij. Matematika %D 1977 %P 9-18 %N 8 %I mathdoc %U http://geodesic.mathdoc.fr/item/IVM_1977_8_a1/ %G ru %F IVM_1977_8_a1