AZIZ, Roikhan Mochamad. Electrocardiogram With Sinlammim Heartbeat On R12 And R47 Code In Pandemic Economy. Nusantara Science and Technology Proceedings, Malang, Indonesia, p. 84–90, 2022. DOI: 10.11594/nstp.2022.2211. Disponível em: https://nstproceeding.com/index.php/nuscientech/article/view/1018. Acesso em: 18 jul. 2025.