Hanggar Yudha Pradana, and Puput Dani Prasetyo Adi. “Monitoring Detak Jantung Dan Sistem Implementasi Telemetri Pada Pelaksanaan Lari”. SinarFe7, vol. 1, no. 1, July 2018, pp. 124-8, https://journal.fortei7.org/index.php/sinarFe7/article/view/520.