J. G. Plaza Salto, S.-Z. Cristina, M. I. Acosta Urigüen, M. P. Orellana Cordero, I. P. Cedillo Orellana, and J. L. Zambrano-Martínez, “Speech recognition based on Spanish accent acoustic model”, Enfoque UTE, vol. 13, no. 3, Jul. 2022.