2Simson MB. Clinical applicalion of signal averaging. C, anliology Clin, 1983, 1: 109-119.
3Freedman RA, Gillis AM, Keren A, et al. Signal-averaged electrocardiographic late potentials in patients with ventricular fibrillation or verSricular tachycardia: correlation with clinical arrhythmia and electrophysiologic study. Am J Cardiol, 1985,55: 1350-1353.
4Breithardt G, Becket R, Seipel L, et al. Non-invasive detection of late potential in man——a new marker for ventricular tachycardia. Eur Heart J, 1981, 2: 1-11.