Clifford, A. H. Semigroups admitting relative inverses. (English) Zbl 0063.00920 Ann. Math. (2) 42, 1037-1049 (1941). Not reviewed Cited in 4 ReviewsCited in 124 Documents MSC: 20M10 General structure theory for semigroups PDF BibTeX XML Cite \textit{A. H. Clifford}, Ann. Math. (2) 42, 1037--1049 (1941; Zbl 0063.00920) Full Text: DOI OpenURL