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2. Robot Manipulators: Mathematics, Programming and Control;Paul,1981
3. Force feed back control of manipulator fine motions;Whitney;Trans. ASME, J. Dynam. Syst. Meas. Control,1971
4. Hybrid position/force control of manipulators;Reibert;Trans. ASME, J. Dynam. Syst. Meas. Control,1977
5. A robust force controller: theory and experiments;Payndeh,1991