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Aragón-González, G.; Aragón, J. L.; Rodríguez-Andrade, M. A.; Verde-Star, L. Reflections, rotations, and Pythagorean numbers. (English) Zbl 1173.15019 Adv. Appl. Clifford Algebr. 19, No. 1, 1-14 (2009). Reviewer: Georgi Hristov Georgiev (Shumen) MSC: 15A66 12D15 PDFBibTeX XMLCite \textit{G. Aragón-González} et al., Adv. Appl. Clifford Algebr. 19, No. 1, 1--14 (2009; Zbl 1173.15019) Full Text: DOI