Dooms, Ann; Veloso, Paula M. Normalizers and free groups in the unit group of an integral semigroup ring. (English) Zbl 1151.16032 J. Algebra Appl. 6, No. 4, 655-669 (2007). Reviewer: Eric Jespers (Brüssel) MSC: 16U60 16S36 20M25 20E07 16U70 20E05 PDFBibTeX XMLCite \textit{A. Dooms} and \textit{P. M. Veloso}, J. Algebra Appl. 6, No. 4, 655--669 (2007; Zbl 1151.16032) Full Text: DOI
Dooms, Ann; Jespers, Eric; Juriaans, Stanley Orlando Units in orders and integral semigroup rings. (English) Zbl 1035.16027 J. Algebra 265, No. 2, 675-689 (2003). Reviewer: A. A. Bovdi (Debrecen) MSC: 16U60 16S36 PDFBibTeX XMLCite \textit{A. Dooms} et al., J. Algebra 265, No. 2, 675--689 (2003; Zbl 1035.16027) Full Text: DOI