Bakhyt, S., Kalimbetov, B. y Khabibullayev, Z. (2019) «Possibilities of mathematical problems in logical thinking. Development of secondary education pupils», Opción, 34(85-2), pp. 441-457. Disponible en: https://www.produccioncientificaluz.org/index.php/opcion/article/view/23803 (Accedido: 5mayo2024).