Larsen, Mogens Esrom; Singmaster, David Equivalent relations between the angles and the sides in a triangle. (Danish. English summary) Zbl 0812.51021 Normat 41, No. 4, 144-155 (1993). MSC: 51N05 11D09 PDFBibTeX XMLCite \textit{M. E. Larsen} and \textit{D. Singmaster}, Normat 41, No. 4, 144--155 (1993; Zbl 0812.51021)
Larsen, Mogens Esrom \(\pi\) to a billion decimals. (Danish. English summary) Zbl 0749.11059 Normat 38, No. 3, 112-114 (1990). MSC: 11Y60 65D20 11-04 PDFBibTeX XMLCite \textit{M. E. Larsen}, Normat 38, No. 3, 112--114 (1990; Zbl 0749.11059)