Experimental analysis of heart rate variability of long-recording electrocardiograms in normal subjects and patients with coronary artery disease and normal left ventricular function. - Stavros Nikolopoulos; Anastasia Alexandridi; Stavros Nikolakeas; George Manis (J. Biomed. Informatics, 2003)

Block Entropy Analysis of Heart Rate Variability Signals. - Kostas Karamanos; Stavros Nikolopoulos; K. Hizanidis; George Manis; Anastasia Alexandridi; Stavros Nikolakeas (Int. J. Bifurc. Chaos, 2006)