A. Alonso, R. de la Rosa, A. Carrera, A. Bahillo, R. Durán and P. Fernández, “A Control System for Robots and Wheelchairs: Its Application for People with Severe Motor Disability,” In: Z. Gacovski, Ed., Mobile Robots— Current Trends, InTechOpen, Rijeka, 2011.
 A. Murai, M. Mizuguchi, M. Nishimori, T. Sayito, T. Osaka and R. Konishi, “Voice Activated Wheelchair with Collision Avoidance Using Sensor Information,” Proceedings of the ICROSSICE International Joint Conference, Fukuoka, 18-21 August 2009, pp. 4232-4237.
 M. Teixidó, A. Guillamet, T. Pallejà, M. Tresanchez, J. Palacín, A. Fernández del Viso and C. Rebate, “Implementation of Virtual Mouse HeadMouse as a Tool to Improve ICT Accessibility,” Proceedings of the IV International Congress on Design, Research Networks, and Technology for All (DRT4all2011), Madrid, 27-29 June 2011, pp. 433-442.
 A. Frizera, W. Cardoso, V. Ruiz, T. FreireBastos and M. Sarcinelli, “Human-Machine Interface Based on Electrobiological Signals for Mobile Vehicles,” Proceedings of the 2006 IEEE International Symposium on Industrial Electronics, Vol. 4, Montreal, 9-13 July 2006, pp. 2954-2959.
 J. del R. Millán, F. Renkens, J. Mourino and W. Gerstner, “Noninvasive Brain-Actuated Control o a Mobile Robot by Human EEG,” IEEE Transactions on Biomedical Engineering, Vol. 51, No. 6, 2004, pp. 1026-1033.
 A. Alonso, R. de la Rosa, L. del Val, M. I. Jimenez and S. Franco, “A Robot Controlled by Blinking for Ambient Assisted Living,” Distributed Computing, Artificial Intelligence, Bioinformatics, Soft Computing, and Ambient Assisted Living. Lecture Notes in Computer Science, Vol. 5518, No. 1, 2009, pp. 839-842.
 J. M. Azkoitia, G. Eizmendi, I. Manterota, H. Zabaleta and M. Pérez, “Non-Invasive, Wireless and Universal Interface for the Control of Peripheral Devices by Means of Head Movements,” Proceedings of II International Congress on Domotics, Robotics and Remote-Assistance for All (DRT4all2007), Madrid, 13-15 June 2007, pp. 211-219.
 A. Alonso, “System Design of a Self-Guided Wheelchair for Controlled Environments,” Proceedings of the Internacional Simposium on Biomechanic Methods (SIBVA ’99), Valladolid, 1-3 December 1999, pp. 103-110.
 D. G. Evans, R. Drew and P. Blenkon, “Controlling Mouse Pointer Position Using an Infrared Head-Operated Joystick,” IEEE Transactions on Rehabilitation Engineering, Vol. 8, No. 1, 2000, pp. 107-116.
 Y. W. Kim and J. H. Cho, “A Novel Development of Head-Set Type Computer Mouse Using Gyro Sensors for the Handicapped,” Proceedings of the 2nd Annual International IEEE-EMB Special Topic Conference on Microtechnologies in Medicine & Biology, Madison, 2-4 May 2002, pp. 356-360.
 X. Huo, J. Wang and M. Ghovanloo, “A Wireless Tongue-Computer Interface Using Stereo Differential Magnetic Field Measurement,” Proceedings of the 29th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, Lyon, 22-26 August 2007, pp. 5723-5726.
 A. Plotkin, L. Sela, A. Weissbrod, R. Kahana, L. Haviv, Y. Yeshurun, N. Soroker and N. Sobel, “Sniffing Enables Communication and Environmental Control for the Severely Disabled,” Proceedings of the National Academy of Sciences of the United States of America, Vol. 107, No. 32, 2010, pp. 14413-14418.
 J. Fan, S. Jia, X. Li, W. Lu, J. Sheng, L. Gao and J. Yan, “Motion Control of Intelligent Wheelchair Based on Sitting Postures,” Proceedings of the 2011 IEEE International Conference on Mechatronics and Automation, Beijing, 7-10 August 2011, pp. 301-306.
 Y. W. Kim, “Development of Headset-Type Computer Mouse Using Gyro Sensors for the Handicapped,” Electronics Letters, Vol. 38, No. 22, 2002, pp. 1313-1314.
 A. De Santis and D. Iacoviello, “Robust Real Time Eye Tracking for Computer Interface for Disabled People,” Computer Methods and Programs in Biomedicine, Vol. 96, No. 1, 2009, pp. 1-11.
 M. Betke, P. Gips and P. Fleming, “The Camera Mouse: Visual Tracking of Body Features to Provide Computer Access for People with Severe Disabilities,” IEEE Transactions on Neural Systems and Rehabilitation Engineering, Vol. 10, No. 1, 2002, pp. 1534-4320.
 R. Barea, L. Boquete, J. M. Rodriguez-Ascariz, S. Ortega and E. López, “Sensory System for Implementing a Human-Computer Interface Based on Electrooculography,” Sensors (Basel), Vol. 11, No. 1, 2011, pp. 310-328.
 M. Yoshida, T. Itou and J. Nagata, “Development of EMG controlled mouse cursor,” Proceedings of the Second Joint EMBS-BMES, 24th Annual International Conference of the Engineering in Medicine and Biology Society, Annual Fall Meeting of the Biomedical Engineering Society, Vol. 3, Houston, 23-26 October 2002, p. 2436.