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Communicated by N. R. Reilly
This work was supported by a grant from the Indiana University-Purdue University at Fort Wayne Research and Instructional Development Support Program.
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Edwards, C.C. F-regular and F-orthodox semigroups. Semigroup Forum 19, 331–345 (1980). https://doi.org/10.1007/BF02572526
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DOI: https://doi.org/10.1007/BF02572526