1. Nicolas-Alonso, L.F., Gomez-Gil, J.: Brain computer interfaces, a review. Sensors 12, 1211–1279 (2012)
2. Ortiz-Rosario, A., Adeli, H.: Brain-Computer Interface technologies: from signal to action. Rev. Neurosci. 24, 537–552 (2013)
3. Intelligent Systems Reference Library,2015
4. Graimann, B., Allison, B., Pfurtscheller, G. (eds.): Brain-Computer Interfaces. Revolutionizing Human-Computer interaction. Springer, Heidelberg (2010)
5. Allison, B.Z., Dunne, S., Leeb, R., Millán, J.D.R., Nijholt, A. (eds.): Towards Practical Brain-Computer Interfaces. Bridging the Gap from Research to Real-World Applications. Springer, Heidelberg (2012)