Báez Ureña, N.L. , Blanco Sánchez, R. and Heredia Soriano, W. (2024) “The optimization problems in the differential calculus of a variable”, Transformación, 18(2), pp. 229–242. Available at: https://transformacion.reduc.edu.cu/index.php/transformacion/article/view/117 (Accessed: 4 March 2026).