Morales, B, and G Chávez. “Estimated Nutrient Loads from the Drainage Basin of the River Tepenaguasapa”. Nexo Revista Científica 23, no. 1 (September 2, 2010): 18–26. Accessed February 1, 2026. https://www.camjol.info/index.php/NEXO/article/view/35.