NOOR, A.; SHADI, M. The Heart Auscultation. From Sound to Graphical. Journal of Engineering and Technology (JET), [S. l.], v. 4, n. 2, p. 73–84, 2013. Disponível em: https://jet.utem.edu.my/jet/article/view/250. Acesso em: 17 may. 2024.