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F. G. Abdullaev and A. A. Dovgoshei, Mat. Zametki [Math. Notes], 77 (2005), no. 1, 3–15 [3-14].
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Translated from Matematicheskie Zametki, vol. 80, no. 1, 2006, p. 156.
Original Russian Text Copyright © 2006 by F. G. Abdullaev, A. A. Dovgoshei.
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Abdullaev, F.G., Dovgoshei, A.A. Letter to the Editor. Math Notes 80, 154–155 (2006). https://doi.org/10.1007/s11006-006-0122-7
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DOI: https://doi.org/10.1007/s11006-006-0122-7