Díaz-Parra, O., Fuentes-Penna, A., Ruiz-Jaimes, M. A., Toledo-Navarro, Y., Lezama-León, M. and Lezama-León, E. (2018) “Intelligent Tutor System for the Learning of Otomí Language”, International Journal of Combinatorial Optimization Problems and Informatics, 9(3), pp. 18–25. Available at: https://ijcopi.org/ojs/article/view/97 (Accessed: 29 March 2024).