Dirk Hoyer Holger Friedrich Birgit Frank Bernd Pompe Rafal Baranowski Jan J. Zebrowski Hendrik Schmidt Autonomic information flow improves prognostic impact of task force HRV monitoring. 246-255 2006 81 Computer Methods and Programs in Biomedicine 3 http://dx.doi.org/10.1016/j.cmpb.2006.01.002 db/journals/cmpb/cmpb81.html#HoyerFFPBZS06