Sifuentes, E., J. Cota-Ruiz, and R. Gonzalez-Landaeta. “Respiratory Rate Detection by a Time-Based Measurement System”. Revista Mexicana de Ingenieria Biomedica 37, no. 2 (May 15, 2016): 91–99. Accessed August 2, 2025. https://mail.rmib.mx/index.php/rmib/article/view/84.