Dietz, Roland; Geise, Gerhard; Jüttler, Bert On a generalized stereographic projection. (Zur verallgemeinerten stereographischen Projektion.) (German) Zbl 0841.51015 Math. Pannonica 6, No. 2, 181-197 (1995). Reviewer: E.Heil (Darmstadt) MSC: 51N15 51M30 53A05 PDFBibTeX XMLCite \textit{R. Dietz} et al., Math. Pannonica 6, No. 2, 181--197 (1995; Zbl 0841.51015) Full Text: EuDML
Geise, G.; Langbecker, U. Finite quadric segments with four conic boundary curves. (English) Zbl 0716.65012 Comput. Aided Geom. Des. 7, No. 1-4, 141-150 (1990). Reviewer: C.Simerská MSC: 65D17 PDFBibTeX XMLCite \textit{G. Geise} and \textit{U. Langbecker}, Comput. Aided Geom. Des. 7, No. 1--4, 141--150 (1990; Zbl 0716.65012) Full Text: DOI