The minimal sampling frequency of the photoplethysmogram for accurate pulse rate variability parameters in healthy volunteers. - Szabolcs Béres; László Hejjel (Biomed. Signal Process. Control., 2021)

The oscillating pulse arrival time as a physiological explanation regarding the difference between ECG- and Photoplethysmogram-derived heart rate variability parameters. - Bella Eszter Ajtay; Szabolcs Béres; László Hejjel (Biomed. Signal Process. Control., 2023)