inria-00527635 title_s Methodology for Multifractal Analysis of Heart Rate Variability: From LF/HF Ratio to Wavelet Leaders auteur Patrice Abry, Herwig Wendt, Stéphane Jaffard, Hannes Helgason, Paulo Gonçalves, Edmundo Pereira, Claude Gharib, Pascal Gaucherand, Muriel Doret annee 2010 conference 32nd Int. Conf. of the IEEE Engineering in Medicine and Biology Society