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Translated from Trudy Seminara imeni I. G. Petrovskogo, No. 7, pp. 199–227, 1981.
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Fal'ko, N.S. Two-dimensional almost-reducible systems with almost-periodic coefficients. J Math Sci 31, 3213–3234 (1985). https://doi.org/10.1007/BF02105142
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DOI: https://doi.org/10.1007/BF02105142