Uswarman, Rudi. “Desain Dan Implementasi Elektrokardiogram (EKG) Portable Menggunakan Arduino”. Electrician : Jurnal Rekayasa dan Teknologi Elektro 11, no. 1 (February 23, 2017): 1-8. Accessed June 7, 2025. http://electrician.unila.ac.id/index.php/ojs/article/view/2010.