Monitor Denyut Jantung Menggunakan Metode Sensor Cahaya. WAKTU: Jurnal Teknik UNIPA, [S. l.], v. 9, n. 1, p. 55–61, 2011. DOI: 10.36456/waktu.v9i1.904. Disponível em: https://jurnal.unipasby.ac.id/waktu/article/view/904. Acesso em: 5 aug. 2026.