Gerente, Alain \({\mathfrak D}\)-classes régulières dans un demi-groupe. (French) Zbl 0245.20055 C. R. Acad. Sci., Paris, Sér. A 274, 1691-1694 (1972). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page MSC: 20M10 General structure theory for semigroups PDFBibTeX XMLCite \textit{A. Gerente}, C. R. Acad. Sci., Paris, Sér. A 274, 1691--1694 (1972; Zbl 0245.20055)