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Translated from Ukrainskii Matematieheskii Zhurnal, Vol. 31, No. 3, pp. 247–255, May–June, 1979.
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Vainerman, L.I. A degenerate elliptic equation with variable operator coefficients. Ukr Math J 31, 191–197 (1979). https://doi.org/10.1007/BF01089017
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DOI: https://doi.org/10.1007/BF01089017