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M. Cioban, P. Soltan and C. Gaindric, Academician Vladimi Arnautov - 70th anniversary, Bul. Acad. Stiinte Repub. Mold., 3 (61) (2009), 118-124.
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Hindman, N., Pym, J., & Strauss, D. (2003). Multiplications in additive compactifications of N and Z. Topology and its Applications, 131(2), 149-176. doi:10.1016/s0166-8641(02)00298-5
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