Unobtrusive heart rate estimation during physical exercise using photoplethysmographic and acceleration data. - Patrick Mullan; Christoph M. Kanzler; Benedikt Lorch; Lea Schroeder; Ludwig Winkler; Larissa Laich; Frederik Riedel; Robert Richer; Christoph Luckner; Heike Leutheuser; Björn M. Eskofier; Cristian F. Pasluosta (EMBC, 2015)