Goris, D., Morillo, G. y Acosta-Humánez, P. (2024) «Application of Duval’s theory of semiotic representations using graph theory as a strategy to improve the teaching of matrices», Revista MATUA , 11(1), pp. 5–22. Disponible en: https://www.revistasuniatlanticoeduco.biteca.online/index.php/MATUA/article/view/4490 (Accedido: 2 febrero 2026).