2) T. Ojima and S. Tomozawa, et al.; Magnetic Properties of a New Type of Rare-Earth Cobalt Magnets, IEEE Trans. on Magnetics, MAG-13, 1317-1319 (1977)
3) H. Asada, T. Kanade and R. Reddy: Design Concept of Direct-Drive Manipulators Using Rare-Earth DC Torque Motors, Proc. of the 11th ISIR, 629/636 (1981)
4) K.M. Vukhbratovic and D.M. Stokic: Contribution to the Decoupled Control of Large-Scale Mechanical Systems, Automatics, 16, 9/21 (1980)
5) M.H. Raibert and J.J. Craig: Hybrid Force/Position Control of Manipulators, ASME Journal on Dynamic Systems, Measurement, and Control, 103-2, 126/133 (1981)