Comparison of Different Methods for the Evaluation of Treatment Effects from the Sleep EEG of Patients with Major Depression. - Helland, V. Carolina Figueroa; Postnova, Svetlana; Schwarz, Udo; Kurths, Jürgen; Kundermann, Bernd; Hemmeter, Ulrich; Braun, Hans A. (Journal of Biological Physics, 2008)