Chun Keat, L., A. B. Jambek, and U. Hashim. “Heart Rate Monitoring Using ARM Soft Core Processor Based System-on-Chip”. Journal of Telecommunication, Electronic and Computer Engineering (JTEC), vol. 10, no. 1, Jan. 2018, pp. 113-8, https://jtec.utem.edu.my/jtec/article/view/2130.