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Additional information
M. V. Lomonosov Moscow State University. Translated from Sibirskii Matematicheskii Zhurnal, Vol. 24, No. 4, pp. 38–63, July–August, 1983.
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Kamynin, L.I. A linear boundary-value problem for a second-order elliptic-parabolic equation. Sib Math J 24, 521–543 (1983). https://doi.org/10.1007/BF00969551
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DOI: https://doi.org/10.1007/BF00969551