Approximation in the mean of functions of class $W^rH[\omega]_L$ by Fourier series
English version (Springer): Ukrainian Mathematical Journal 25 (1973), no. 2, pp 215-221.
Citation Example: Demchenko A. G. Approximation in the mean of functions of class $W^rH[\omega]_L$ by Fourier series // Ukr. Mat. Zh. - 1973. - 25, № 2. - pp. 267—277.
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