Wilson AJ, Felton EA, Garell CP, Schalk G, Williams JC. ECoG factors underlying multimodal control of a brain-computer interface. IEEE Trans Neural Syst Rehabil Eng [Internet]. 2006;14(2):246-50. http://www.ncbi.nlm.nih.gov/pubmed/16792305

Schalk G, McFarland DJ, Hinterberger T, Birbaumer N, Wolpaw J. BCI2000: a general-purpose brain-computer interface (BCI) system. IEEE Trans Biomed Eng. 2004;51(6):1034-43.