“IDF Curved Structures: Villa Olga and Santa Isabel Waste Treatment Plants - Municipality of Cúcuta - Colombia”. REVISTA AMBIENTAL AGUA, AIRE Y SUELO 2, no. 2 (December 25, 2007): 80–94. Accessed October 17, 2025. https://ojs.unipamplona.edu.co/index.php/aaas/article/view/2042.