1. R. C. Goertz (1964) Manipulator systems development at ANL. In proc. Of the 12th Int. RSTD Conference.
2. M. Bergamasco (1995). Force replication to the human operator: The development of arm and hand exoskeleton as haptic devices. In The seventh ISRR, Germany, pp. 173–182
3. R. Azuma, G. Bishop (1994). Improved Static and Dynamic Registration in an Optical See-through HMD. In Proc. SIGGRAPH, Orlando.
4. R. Rasid (1979). LIGHTS: A study in motion. In Proc. DARPA Image Understanding Workshop, pp. 57–68, Nov.
5. M. Ward, R. Azuma, R. Bennett, S. Gottscalk, H. Fuchs (1992). A Demonstrated Optical Tracker with Scalable Work Area for Head-Mounted Display Systems. In Proc. of the Symposium on Interactive 3D Graphics, pp. 43–52.