Darmana, Ija, Erliwati, and Adiv Rama Salvayer. “Rancang Bangun Perangkat Pendeteksi Detak Jantung (PPDJ) Secara Portabel”. Jurnal Ilmu Multidisiplin 4, no. 5 (December 11, 2025): 3036–3041. Accessed February 10, 2026. https://greenpub.org/JIM/article/view/1491.