Analysing ventricular fibrillation ECG-signals and predicting defibrillation success during cardiopulmonary resuscitation employing N(alpha)-histograms - Amann, A; Achleitner, U; Antretter, H; Bonatti, JO; Krismer, AC; Lindner, KH; Rieder, J; Wenzel, V; Voelckel, WG; Strohmenger, HU (Resuscitation, 2001)