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Translated from Matematicheskie Zametki, Vol. 36, No. 4, pp. 479–491, October, 1984.
The author expresses his sincere gratitude to V. M. Tikhomirov for the formulation of the problem and for his constant interest.
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Zung, D. Number of integral points in a certain set and the approximation of functions of several variables. Mathematical Notes of the Academy of Sciences of the USSR 36, 736–744 (1984). https://doi.org/10.1007/BF01156461
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DOI: https://doi.org/10.1007/BF01156461