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Translated from Ukrainskii Matematicheskii Zhurnal, Vol.20, No.5, pp.628–641, September–October, 1968.
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Lykova, O.B., Bozatyrev, B.M. The reductibility of some differential equations in Banach space. Ukr Math J 20, 542–553 (1968). https://doi.org/10.1007/BF01091998
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DOI: https://doi.org/10.1007/BF01091998