1. Human–computer interaction using eye-gazeinput;Hutchinson;IEEE Trans. Systems, Man Cybernetics,1989
2. Electronic control of a wheelchair guided by voice commands;Mazo;Control Eng. Practice,1995
3. J. Gips, P. DiMattia, F.X. Curran, P. Olivieri, Using EagleEyes – an electrodes based device for controlling the computer with your eyes – to help people with special needs, in: Proceedings of the Fifth International Conference on Computers Helping People with Special Needs (ICCHP'96), Linz, Austria, July 1996
4. Wheelchair for physically disabled pople with voice, ultrasonic and infrared sensor control;Mazo;Autonomous Robot,1995
5. Design of a wheelchair with legs for people with motor disabilities;Wellman;IEEE Trans. Rehabilitation Eng.,1995