Plank, M. and Onton, J. and Muller, Hermann J. and Makeig, S. and Gramann, K. (2010) Human EEG correlates of spatial navigation within egocentric and allocentric reference frames. In: Goebel, R. and Siekmann, J. and Wahlster, W. (eds.) Spatial Cognition VII. Lecture Notes in Artificial Intelligence 6222. Berlin, Germany: Springer, pp. 191-206. ISBN 9783642147487.

Plank, M. and Muller, Hermann J. and Makeig, S. and Onton, J. and Gramann, K. (2009) VR as promising tool for experimental research on human spatial navigation. In: Welke, S. and Kolrep, H. and Rötting, M. (eds.) Biophysiologische Interfaces in der Mensch-Maschine-Interaktion. Dusseldorf, Germany: VDI Verlag, pp. 50-62. ISBN 9783183030224.