Petrich, Mario; Reilly, Norman R. Completely regular semigroups. (English) Zbl 0967.20034 Canadian Mathematical Society Series of Monographs and Advanced Texts. 23. Chichester: Wiley. x, 481 p. (1999). Reviewer: F.J.Pastijn (Milwaukee) MSC: 20M17 20M07 20-02 20M19 20M05 20M18 08A30 08B15 PDFBibTeX XMLCite \textit{M. Petrich} and \textit{N. R. Reilly}, Completely regular semigroups. Chichester: Wiley (1999; Zbl 0967.20034)
Petrich, Mario Free inverse semigroups. (English) Zbl 0716.20038 Colloq. Math. 59, No. 2, 213-221 (1990). Reviewer: F.Pastijn MSC: 20M05 20M18 PDFBibTeX XMLCite \textit{M. Petrich}, Colloq. Math. 59, No. 2, 213--221 (1990; Zbl 0716.20038) Full Text: DOI