Liu, Shaoxue; Beattie, Margaret; Fang, Hongjin Graded division rings and the Jacobson density theorem. (English) Zbl 0746.16031 J. Beijing Norm. Univ., Nat. Sci. 27, No. 2, 129-134 (1991). Reviewer: C.Năstăsescu (Bucureşti) MSC: 16W50 16D60 16K40 16D70 16S50 16N20 PDFBibTeX XMLCite \textit{S. Liu} et al., J. Beijing Norm. Univ., Nat. Sci. 27, No. 2, 129--134 (1991; Zbl 0746.16031)
Beattie, M. A.; Liu, S.-X.; Stewart, P. N. Comparing graded versions of the prime radical. (English) Zbl 0742.16020 Can. Math. Bull. 34, No. 2, 158-164 (1991). Reviewer: C.Năstăsescu (Bucureşti) MSC: 16W50 16N60 16S90 16N20 PDFBibTeX XMLCite \textit{M. A. Beattie} et al., Can. Math. Bull. 34, No. 2, 158--164 (1991; Zbl 0742.16020) Full Text: DOI