Approximation by Fourier sums of classes of periodic functions of several variables defined by polyharmonic operators
English version (Springer):
Ukrainian Mathematical Journal 32 (1980), no. 2, pp 127-132
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Citation Example: Zaderei N. N. Approximation by Fourier sums of classes of periodic functions of several variables defined by polyharmonic operators // Ukr. Mat. Zh. - 1980. - 32, № 2. - pp. 212 - 219.
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