1. Bringmann, B., Knapp W., Model-based ‘Chase-the-ball’ Calibration of a 5-Axes Machining Centre, Annals of CIRP vol 55/1/2006.
2. Florussen, G.H.J., Spaan, H.A.M., Static R-test: allocating the centreline of rotary axes of machine tools, Lamdamap conference VIII, Cardiff University, UK, 2007.
3. Weikert S., Knapp W., R-test, a New Device of Accuracy Measurements of Five Axis Machine Tools, Annals of CIRP vol 53/1/2004.
4. Florussen, G.H.J., Morel M.A.A., Spaan H.A.M., Assessing the impact of rotary axes on the dynamic accuracy of machine tools, Lamdamap conference IX, Brunel University, UK, 2009.
5. ISO 10791-6, Test conditions for machining centres – Part 6: Accuracy of speeds and interpolations, 1998.