1.
Báez Ureña N, Rincón Santana E, Blanco Sánchez R, Angeris Artiles M. The movement of the variable in one-sided limits as resource for teaching differential calculus. Trans. 2026;22. Accessed September 28, 2026. https://transformacion.reduc.edu.cu/index.php/transformacion/article/view/670