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Translated from Ukrainskii Matematicheskii Zhurnal, Vol. 31, No. 3, pp. 320–325, May–June, 1979.
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Matkovskii, A.P. Solvability of a boundary-value problem for an equation with bounded operator-valued coefficients. Ukr Math J 31, 247–251 (1979). https://doi.org/10.1007/BF01089027
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DOI: https://doi.org/10.1007/BF01089027