Borgheai SBahram, McLinden J, Zisk AHillary, Hosni SIsmail, Deligani RJafari, Abtahi M, et al.. Enhancing Communication for People in Late-Stage ALS Using an fNIRS-Based BCI System. IEEE Trans Neural Syst Rehabil Eng. 2020;28(5):1198-1207. 

Haselager P, Vlek R, Jeremy Jeremy Hill, Nijboer F. A note on ethical aspects of BCI. Neural Netw [Internet]. 2009;22(9):1352-7. http://www.ncbi.nlm.nih.gov/pubmed/19616405

Wolpaw J, McFarland DJ, Neat GW, Forneris CA. An EEG-based brain-computer interface for cursor control. Electroencephalography and clinical neurophysiology [Internet]. 1991;78:252?259. http://www.ncbi.nlm.nih.gov/pubmed/1707798