Schröcker, Hans-Peter; Pfurner, Martin; Schadlbauer, Josef Constraint varieties in mechanism science. (English) Zbl 1404.70005 Sitharam, Meera (ed.) et al., Handbook of geometric constraint systems principles. Boca Raton, FL: CRC Press (ISBN 978-1-4987-3891-0/hbk; 978-1-4987-3892-7/ebook). Discrete Mathematics and its Applications, 253-272 (2019). MSC: 70B10 52C25 PDF BibTeX XML Cite \textit{H.-P. Schröcker} et al., in: Handbook of geometric constraint systems principles. Boca Raton, FL: CRC Press. 253--272 (2019; Zbl 1404.70005) OpenURL
Schadlbauer, Josef; Schröcker, Hans-Peter Orthogonality relations for tetrahedra in elliptic and hyperbolic space. (English) Zbl 1302.51012 J. Geom. Graph. 18, No. 1, 97-104 (2014). MSC: 51M10 51N15 PDF BibTeX XML Cite \textit{J. Schadlbauer} and \textit{H.-P. Schröcker}, J. Geom. Graph. 18, No. 1, 97--104 (2014; Zbl 1302.51012) Full Text: Link OpenURL