Estimates for the best approximations and approximation by Fourier sums of classes of convolutions of periodic functions of not high smoothness in integral metrics von Stepaniuk, T. A., Степанюк, Т. А.

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Approximative properties of the Weierstrass integrals on the classes WrβHα von Grabova, U.Z., Kal'chuk, I.V., Stepaniuk, T.A.

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