Fulla, M. R., I. E. Rivera, and J. L. Palacio. “Analysis of the Derivation under the Integration Sign”. Revista CINTEX 21, no. 1 (June 30, 2016): 15–22. Accessed July 3, 2024. https://revistas.pascualbravo.edu.co/index.php/cintex/article/view/6.