1. Proc. 4th. Ann. Conf. on Systems and Devices for the Disabled;Clark,1977
2. Voice Control System for the Severely Disabled;Cohen;Final Report, VA,1977
3. Proc. 10th. Conf. of Electrical and Electronics Eng. in Israel;Cohen,1977
4. Identification of Systems;Graupe,1976
5. IEEE Int. Conf. on Acoust. Speech and Sig. Proc.;Grunza,1977