Gilgen-Ammann, R., M. J. Buller, J. L. Bitterle, S. K. Delves, B. J. . Veenstra, L. Roos, N. Beeler, and T. Wyss. “Evaluation of Pulse Rate Measurement With a Wrist Worn Device During Different Tasks and Physical Activity”. Current Issues in Sport Science (CISS), vol. 3, July 2018, p. 011, doi:10.15203/CISS_2018.011.