Peng, Tsu Ann The right-angled triangle. (English) Zbl 0661.10021 Math. Medley 16, No. 1, 1-9 (1988). Reviewer: F.Fricker MSC: 11D04 11B39 11D25 PDFBibTeX XMLCite \textit{T. A. Peng}, Math. Medley 16, No. 1, 1--9 (1988; Zbl 0661.10021)
Ann, Peng Tsu Normal subgroups and factor groups. (English) Zbl 0477.20003 Math. Medley 9, 11-14 (1981). MSC: 20A05 PDFBibTeX XMLCite \textit{P. T. Ann}, Math. Medley 9, 11--14 (1981; Zbl 0477.20003)
Ann, Peng Tsu Some results on metanilpotent groups. (English) Zbl 0413.20018 Math. Medley 6, 111-112 (1978). MSC: 20D15 20D10 20D20 PDFBibTeX XMLCite \textit{P. T. Ann}, Math. Medley 6, 111--112 (1978; Zbl 0413.20018)