1. A platform with six degrees of freedom;Stewart;Proc. Inst. Mech. Eng.,1965
2. Mechanical wrist for a robot arm;Bennett,1968
3. A compliant device for inserting a peg in a hole;McCallion;Ind. Robot,1979
4. Development and investigation of industrial robots based on specification by 1-coordinates;Koliskor;Soviet Eng. Res.,1982
5. A novel design for a robot arm;Fichter,1980