1. Fichter, E. F., (1986), A Stewart platform based manipulator: General theory and practical construction, The International Journal of Robotics Research, Vol. 5, No. 3, pp. 157–181.
2. Gosselin, C. and Angeles, J., (1990), Singularity analysis of closed-loop kinematic chains, IEEE Transactions on Robotics and Automation, Vol. 6, No. 3, pp. 281–290.
3. Gosselin, C. and Wang, J., (1995), Singularity loci of planar parallel manipulators, Proceedings of the Ninth World Congress on the Theory of Machines and Mechanisms, Milano, Italy, Vol. 3, pp. 1982–1986.
4. Gough, V. E., (1956–57), Contribution to discussion to papers on research in automobile stability and control and in tyre performance, by Cornell staff, Proceedings of Auto. Div. Instn mech. Engrs, 392.
5. Hunt, K. H., (1978), Kinematic geometry of mechanisms, Oxford, Great Britain: Oxford University Press.