Chiumbo Paiva, J., Crespo Hurtado, E., López Fernández, R. y Crespo Borges, T. (2020) Mathematics contests in Huambo province: a pedagogical model for their development, Revista Conrado, 16(S 1), pp. 249-255. Disponible en: https://conrado.ucf.edu.cu/index.php/conrado/article/view/1548 (Accedido: 5marzo2021).