Guédénon, T. Projectivity and flatness over the graded ring of normalizing elements. (English) Zbl 1347.16037 Algebra Discrete Math. 19, No. 2, 172-192 (2015). Reviewer: Serban Raianu (Carson) MSC: 16T10 16W22 16D40 16W50 PDFBibTeX XMLCite \textit{T. Guédénon}, Algebra Discrete Math. 19, No. 2, 172--192 (2015; Zbl 1347.16037)
Guédénon, T. Projectivity and flatness over the graded ring of semi-coinvariants. (English) Zbl 1212.16069 Algebra Discrete Math. 10, No. 1, 42-56 (2010). MSC: 16T15 16D40 16S50 16W22 PDFBibTeX XMLCite \textit{T. Guédénon}, Algebra Discrete Math. 10, No. 1, 42--56 (2010; Zbl 1212.16069)