Orjuela-Cañón, Álvaro David, and Hugo Fernando Posada-Quintero. 2016. “Acoustic lung signals analysis based on Mel frequency cepstral coefficients and self-organizing maps”. Revista Facultad de Ingeniería 25 (43):73-82. https://doi.org/10.19053/01211129.v25.n43.2016.5300.