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Translated from Ukrainskii Matematicheskii Zhurnal, Vol. 25, No. 2, pp. 193–198, March–April, 1973.
The author expresses his deepest gratitude to M. I. Kadetz for introducing the problem and directing the research.
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Dimitrov, D.B. Almost periodic and N-periodic solutions of a difference equation. Ukr Math J 25, 156–160 (1973). https://doi.org/10.1007/BF01096974
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DOI: https://doi.org/10.1007/BF01096974