Comparison of Adaptive Spatial Filters with Heuristic and Optimized Region of Interest for EEG Based Brain-Computer-Interfaces. - Christian Liefhold; Moritz Grosse-Wentrup; Klaus Gramann; Martin Buss (DAGM-Symposium, 2007)

Beamforming in Noninvasive Brain-Computer Interfaces. - Moritz Grosse-Wentrup; Christian Liefhold; Klaus Gramann; Martin Buss (IEEE Trans. Biomed. Eng., 2009)