Romero Molina, César Augusto, Ligia Colmenares Jácome, and Andrea Catalina Murillo Olarte. “System and Method to Define the Cost of Tax and Contribution Rates”. DIXI 15, no. 17 (June 9, 2014): 55–66. Accessed August 20, 2026. https://revistas.ucc.edu.co/index.php/di/article/view/639.