1. “Tolerances in four-bar linkages”;Bjorke;Annals of the CIRP,1971
2. Pierre Bourdet, “Contribution a la mesure tridimensionnelle: Modele d'identification gestrique des surfaces, metrologie fonctionnelle des pieces mecaniques, correction geometrique des machines a mesurer tridimensionnelles”. These d'Etat, LURPA, ENS Cachan - 94230 Cachan.
3. “A Simple Method for Testing Measuring Machines and Machine Tools, Part I.”;Bryan;Precision Engineering,1982
4. “Robot accuracy issues and methods of improvement”;Chai;OBOTICS TODAY,1988
5. J. Denavit, R.S. Hartenberg: “A kinematic notation for lower-pari mechanisms based on matrices”. Journal of Applied Mechanics, June 1955.