S.SHANMUGAM STALIN. Design and Development of Stethoscope Amplifier Circuit. International Journal of Advanced Communication Technology (IJACT), [S. l.], v. 3, p. 1–13, 2024. Disponível em: https://ejournal.unimap.edu.my/index.php/ijact/article/view/761. Acesso em: 4 dec. 2024.