Lang Nicolas, Nitsche Michael A, Sommer Martin, Tergau Frithjof, Paulus Walter
Department of Clinical Neurophysiology, University of Göttingen, Robert-Koch-Strasse 40, D-37075 Göttingen, Germany.
Suppl Clin Neurophysiol. 2003;56:277-81. doi: 10.1016/s1567-424x(09)70231-4.