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Communicated by G.J. Lallement
This research was partially supported by a grant from the University of Louisville.
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Levi, I. Injective endomorphisms of\({\cal G}_X - normal\) semigroups: Infinite defectssemigroups: Infinite defects. Semigroup Forum 45, 9–22 (1992). https://doi.org/10.1007/BF03025744
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DOI: https://doi.org/10.1007/BF03025744