Z. Li, Josef Schicho, H.-P. Schroecker,
"7R Darboux Linkages by Factorication of Motion Polynomials"
, in S.-H. Chang et al: Proc. IFToMM 14, Seite(n) 841-847, 2015, ISBN: 978-986-04-6098-8
Original Titel:
7R Darboux Linkages by Factorication of Motion Polynomials