Precise Pre- and Intraoperative Assessment of Functional Cortex by Magnetoencephalography (MEG)Stippich, C.; Kassubek, J.; Sörös, P.; Ganslandt, O.; Kamada, K.; Kober, H.; Hopfengärtner, R.; Steinmeier, R.; Vieth, J.B. · Biomedizinische Technik/Biomedical Engineering · 1996