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Translated from Sibirskii Matematicheskii Zhurnal, Vol. 19, No. 4, pp. 749–758, July–August, 1978.
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Bukhgeim, A.L., Kardakov, V.B. Solution of the inverse problem for the equation of elastic waves by the method of spherical means. Sib Math J 19, 528–535 (1978). https://doi.org/10.1007/BF00967723
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DOI: https://doi.org/10.1007/BF00967723