Delgado, Jonathan, Nieves Mª León, Alejandra Jiménez, and Laura M. Izquierdo. 2017. “Acoustic Analysis of the Voice: Temporal, Spectral and Cepstral Measurements in the Normal Voice With the Praat in a Sample of Spanish Speakers”. Revista de Investigación en Logopedia 7 (2): 108-27. https://revistas.ucm.es/index.php/RLOG/article/view/58191.