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Quasi commutative semigroups and σ-reflexive semigroups

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Communicated by T. Saito

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Spoletini, A.C., Varisco, A. Quasi commutative semigroups and σ-reflexive semigroups. Semigroup Forum 19, 313–321 (1980). https://doi.org/10.1007/BF02572524

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