1. Di Gregorio, R., Parenti-Castelli, V. (2002), Mobility analysis of the 3-UPU parallel mechanism assembled for a pure translational motion, Transactions of the ASME Journal of Mechanical Design 124, 259-264.
2. Gogu, G. (2005a), Mobility of mechanisms: A critical review, Mechanism and Machine Theory 40,1068-1097.
3. Gogu, G. (2005b), Chebychev-Grubler-Kutzbach’s criterion for mobility calculation of multi-loop mechanisms revisited via theory of linear transformations, European Journal of Mechanics, A - Solids 24, 427-441.
4. Gogu, G. (2005c), Mobility and spatiality of parallel robots revisited via theory of linear trans-formations, European Journal of Mechanics, A - Solids 24, 690-711.
5. Gogu G. (2005d), Mobility criterion and overconstraints of parallel manipulators, in Proceedings of International Workshop on Computational Kinematics, Cassino, Italy.