Approximation of periodic functions by Fourier sums in the mean
English version (Springer): Ukrainian Mathematical Journal 38 (1986), no. 2, pp 180-185.
Citation Example: Novikova A. K., Stepanets O. I. Approximation of periodic functions by Fourier sums in the mean // Ukr. Mat. Zh. - 1986. - 38, № 2. - pp. 204–210.
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