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Additional information
Ivanovo. Translated fromSibirskiî Matematicheskiî Zhurnal, Vol. 41, No. 3, pp. 676–691, May–June, 2000.
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Solon, B.Y. e-immune sets. Sib Math J 41, 563–574 (2000). https://doi.org/10.1007/BF02674112
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DOI: https://doi.org/10.1007/BF02674112