Martin S, Brunner P, Iturrate I, Millán JDel R, Schalk G, Knight RT, et al.. Word pair classification during imagined speech using direct brain recordings. Scientific reports [Internet]. 2016;6:25803. http://www.ncbi.nlm.nih.gov/pubmed/27165452

Martin S, Brunner P, Holdgraf C, Heinze H-J, Crone NE, Rieger J, et al.. Decoding spectrotemporal features of overt and covert speech from the human cortex. Frontiers in Neuroengineering [Internet]. 2014;7(14). http://www.ncbi.nlm.nih.gov/pubmed/24904404