Drupal-Bibcite0<style face="normal" font="default" size="100%">The Application of Higher Order Spectra for Analysis of Heart Rate Variability (HRV) Signals Acquired from Patients after Ischemic Brain Stroke</style><style face="normal" font="default" size="100%">The Application of Higher Order Spectra for Analysis of Heart Rate Variability (HRV) Signals Acquired from Patients after Ischemic Brain Stroke</style>