1. Ohya J., Miyasato T., Nakatsu R. Virtual Reality Technologies for Multimedia Communications. In Mixed Reality-Merging Real and Virtual Worlds. Ed. Y Ohta, H. Takamura. Springer-Verlag, NY, 1999.
2. M. Bergamasco. Force replication to the human operator: The development of arm and hand exoskeleton as haptic devices. In The Seventh Int. Symp. on Robotics Research, Germany, pp. 173–182, 1995
3. Azarbayejani A. and Pentland A. Real-time self-calibrating stereo person tracking using 3-D shape estimation from blobs features. In Proceedings IEEE Conference on Computer Vision and Pattern Recognition, Vienna, 1996.
4. Amat J., Casals C., Frigola F., Pages J.. Possibilities of Man-Machine interaction through the perception of human gestures. In Journal Contributions to Science 1(2): 159–173, Institut d’Estudis Catalans, Barcelona, 1999-2000.
5. J. Amat, M. Frigola, A. Casals. Virtual Exoskeleton for Telemanipulation. In Lecture Notes in Control and Information Sciences. Experimental Robotics VII. Eds. D. Rus, S. Singh, Springer, pp. 21–31, 2001.