A software package for non-invasive, real-time beat-to-beat monitoring of stroke volume, blood pressure, total peripheral resistance and for assessment of autonomic function - Gratze, G; Fortin, J; Holler, A; Grasenick, K; Pfurtscheller, G; Wach, P; Schonegger, J; Kotanko, P; Skrabal, F (Comput Biol Med, 1998)