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Translated from Ukrainskii Matematicheskii Zhurnal, Vol. 37, No. 1, pp. 3–8, January–February, 1985.
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Bovdi, A.A., Gudivok, P.M. & Semirot, M.S. Normal group rings. Ukr Math J 37, 1–5 (1985). https://doi.org/10.1007/BF01056842
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DOI: https://doi.org/10.1007/BF01056842