McCane LM, Heckman SM, McFarland DJ, Townsend G, Mak JN, Sellers EW, et al.. P300-based brain-computer interface (BCI) event-related potentials (ERPs): People with amyotrophic lateral sclerosis (ALS) vs. age-matched controls. Clin Neurophysiol [Internet]. 2015;. http://www.ncbi.nlm.nih.gov/pubmed/25703940

Wolpaw J, Birbaumer N, Heetderks WJ, McFarland DJ, Peckham PH, Schalk G, et al.. Brain-computer interface technology: a review of the first international meeting. IEEE transactions on rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society [Internet]. 2000;8:164?173. http://www.ncbi.nlm.nih.gov/pubmed/10896178