Li, Jinqi; Wang, Dingguo Coalgebras and Morita-Takeuchi contexts. (Chinese. English summary) Zbl 1010.16039 Acta Math. Sin. 41, No. 3, 569-576 (1998). MSC: 16W30 16D90 PDFBibTeX XMLCite \textit{J. Li} and \textit{D. Wang}, Acta Math. Sin. 41, No. 3, 569--576 (1998; Zbl 1010.16039)
Wang, Dingguo; Li, Jinqi Characterization of rings using weakly projective modules. II. (English) Zbl 0933.16002 Vietnam J. Math. 26, No. 3, 229-233 (1998). Reviewer: Xue Weimin (Fujian) MSC: 16D40 16D60 16E50 16L30 PDFBibTeX XMLCite \textit{D. Wang} and \textit{J. Li}, Vietnam J. Math. 26, No. 3, 229--233 (1998; Zbl 0933.16002)