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Translated from Ukrainskii Matematicheskii Zhurnal, Vol. 27, No. 5, pp. 614–623, September–October, 1975.
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Sorokina, N.G. Two boundary problems for multidimensional equations of mixed type degenerate on a circular cylinder. Ukr Math J 27, 506–513 (1975). https://doi.org/10.1007/BF01089143
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DOI: https://doi.org/10.1007/BF01089143