Kullback-Leibler clustering of continuous wavelet transform measures of heart rate variability.
Mager DE, Merritt MM, Kasturi J, Witkin LR, Urdiqui-Macdonald M, Sollers JJ, Evans MK, Zonderman AB, Abernethy DR, Thayer JF. Kullback-Leibler clustering of continuous wavelet transform measures of heart rate variability. Biomed Sci Instrum. 2004; 40:337-42.