HERNÁNDEZ GAONA, L. C. Portable Digital Cardiotachometer. Revista Mexicana de Ingenieria Biomedica, [S. l.], v. 5, n. 1, p. 7, 2018. Disponível em: http://rmib.com.mx/index.php/rmib/article/view/485. Acesso em: 8 may. 2024.