@poster{5131, title = {Better Codes for the P300 Visual Speller}, author = {Biessmann, F. and Hill, NJ. and Farquhar, J. and Sch{\"o}lkopf, B.}, journal = {G{\"o}ttingen Meeting of the German Neuroscience Society}, volume = {7}, pages = {123}, organization = {Max-Planck-Gesellschaft}, school = {Biologische Kybernetik}, month = mar, year = {2007}, doi = {}, month_numeric = {3} }