1. Bystronic AG, Switzerland: 3D-cutting with Bystronic 3dcutting. bystronic.com
2. Chen L, Teichgräber C, Berger M (2015) A case study about spherical robot wrists with serial and parallel structure. In: Trc-IFToMM symposium on theory of machines and mechanisms, Izmir, Turkey, p 581–589. ISBN 978-605-84220-0-1
3. Kiper G (2011) Design methods for planar and spatial deployable structures. PhD thesis, Middle East Technical University, Ankara
4. Mosher RS (1985) Low cost articulating and rotating wrist mechanism. US Patent 4,551,058
5. Müglitz J, Berger M, Wegert E (2011) Roboterhandgelenke zum thermischen Schneiden – Robot wrists for thermal cutting (German). In: 9. Kolloquium Getriebetechnik – Chemnitz