Guerrero - Mora, G., E. Palacios - Hernández, J. M. Kortelainen, A. M. Bianchi, and M. O. Méndez. “Multichannel Analysis of an Unobtrusive Sensor for Sleep Apnea-Hypopnea Detection”. Revista Mexicana De Ingenieria Biomedica, vol. 35, no. 1, Jan. 2014, pp. 29-40, https://rmib.mx/index.php/rmib/article/view/212.