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Translated from Ukrainskii Matematicheskii Zhurnal, Vol.19, No. 5, pp. 3–32, September–October, 1967.
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Berezanskii, Y.M., Roitberg, Y.A. A theorem on homeomorphisms and the Green's function for general elliptic boundary problems. Ukr Math J 19, 509–530 (1967). https://doi.org/10.1007/BF01085293
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DOI: https://doi.org/10.1007/BF01085293