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Translated from Matematicheskie Zametki, Vol. 28, No. 6, pp. 843–858, December, 1980.
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Ermakov, A.I. Best Hausdorff approximations by algebraic polynomials and continuity of a function. Mathematical Notes of the Academy of Sciences of the USSR 28, 876–884 (1980). https://doi.org/10.1007/BF01709149
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DOI: https://doi.org/10.1007/BF01709149