Automatic QRS onset and offset detection for body surface QRS integral mapping of ventricular tachycardia. - Jurgen G. C. Kemmelings; André C. Linnenbank; Sylvia L. C. Muilwijk; Arne SippensGroenewegen; Abraham Peper; Cornelis A. Grimbergen (IEEE Trans. Biomed. Eng., 1994)