1. Wolpaw, J.R., Birbaumer, N., McFarland, D.J., Pfurtscheller, G., Vaughan, T.M.: Brain-computer interfaces for communication and control. Clin. Neurophysiol. 113(6), 767–791 (2002)
2. Dugdale, D., Hoch, D., Zieve, D.: Amyotrophic Lateral Sclerosis. A.D.A.M. Medical Encyclopedia (2010)
3. Pfurtscheller, G., da Silva, F.L.: Event-related EEG/MEG synchronization and desynchronization: basic principles. Clin. Neurophysiol. 110(18), 42–57 (1999)
4. Allison, B., Pineda, J.: ERPs evoked by different matrix sizes: implications for a brain-computer interface (BCI) system. IEEE Trans. Neural Syst. Rehabil. Eng. 11(110), 3 (2003)
5. Kubler, A., Kotchoubey, B., Kaiser, J., Wolpaw, J., Birbaumer, N.: Brain-computer communication: unlocking the locked. Psychol. Bull. 127(358), 75 (2001)