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Original Russian Text © A.I. Aptekarev, Yu.G. Rykov, 2006, published in Doklady Akademii Nauk, 2006, Vol. 409, No. 1, pp. 12–14.
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Aptekarev, A.I., Rykov, Y.G. A variational representation of solutions to a certain hyperbolic system of equations by using a logarithmic potential in the external field. Dokl. Math. 74, 477–479 (2006). https://doi.org/10.1134/S1064562406040028
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DOI: https://doi.org/10.1134/S1064562406040028