1. Hollerbach, J.M., (1984), Optimum Kinematic Design for a Seven Degree of Freedom Manipulator, 2nd Int. Symp. Robotics Research, Kyoto, Japan, pp. 215-222.
2. Delmas, Y., (1996), Analyse de l’Espace Accessible des Manipulateurs Redondants: Singularités, Parcourabilité, Thèse de doctorat, Ecole Nationale Supérieure d’Arts et Métiers, Centre de Paris, France.
3. Chiaverini, S., Siciliano, B., and Egeland, O., (1991), Redundancy Resolution for the Human-Arm-Like Manipulator, Robotics and Autonomous Syst., Vol. 8, pp. 239–250.
4. Kreutz-Delgado, K., Long, M., and Seraji, H., (1992), Kinematic Analysis of 7-DOF Manipulators, J. Robotic Syst., Vol. 11, No. 5, pp. 469–481.
5. Burdick, J., (1995), A Recursive Method for Finding Revolute-Jointed Manipulator Singularities, J. Mechanical Design, Vol. 117, pp. 55–63.