[1] Rachid Manseur, Keith L Doly. Structural kinematics of 6-revolute-axis robot manipulators[J]. Mech Mach Theory, 1996, 31(5):647-657.
[2] Ming Z Huang, Oren Masory. A simple method of accuracy enhancement for industrial manipulators[M]. The International Journal of Advanced Manufacturing Technology, 1993,(8):114-122.