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Translated from Trudy Seminara imeni I. G. Petrovskogo, No. 7, pp. 125–147, 1981.
In conclusion the author expresses his profound gratitude to M. A. Subin for posing the problem and for his constant attention to the work and to V. Ya. Ivrii for useful discussion.
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Kiselev, V.Y. Strictly hyperbolic equations in spaces of almost-periodic functions. J Math Sci 31, 3155–3173 (1985). https://doi.org/10.1007/BF02105138
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DOI: https://doi.org/10.1007/BF02105138