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Translated from Matematicheskie Zametki, Vol. 29, No. 3, pp. 431–454, March, 1981.
The authors are grateful to N. P. Korneichuk for discussions and for a series of valuable remarks which have predetermined the apparition of this paper.
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Doronin, V.G., Ligun, A.A. Best one-sided approximation of certain classes of functions. Mathematical Notes of the Academy of Sciences of the USSR 29, 220–233 (1981). https://doi.org/10.1007/BF01158533
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DOI: https://doi.org/10.1007/BF01158533