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Translated from Matematicheskie Zametki, Vol. 46, No. 4, pp. 52–59, October, 1989.
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Rovba, E.A. An approximation of ¦sin x¦ by rational Fourier series. Mathematical Notes of the Academy of Sciences of the USSR 46, 788–794 (1989). https://doi.org/10.1007/BF01158146
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DOI: https://doi.org/10.1007/BF01158146