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Translated from Matematicheskie Zametki, Vol. 49, No. 4, pp. 148–150, 1991.
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Babenko, V.F., Shalaev, V.V. Best approximation estimates resulting from the Chebyshev criterion. Mathematical Notes of the Academy of Sciences of the USSR 49, 431–433 (1991). https://doi.org/10.1007/BF01158225
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DOI: https://doi.org/10.1007/BF01158225