Heart Rate Monitoring and PQRST Detection Based on Graphical User Interface with Matlab. International Journal of Information and Electronics Engineering, [S. l.], v. 5, n. 4, p. 311–316, 2015. Disponível em: https://www.ijiee.org/index.php/ijiee/article/view/433. Acesso em: 28 aug. 2026.