Martín Rincón, Claudia L., Roberto Terraza Melo, Nadia R. Rojas Parra, Germán A. Martínez Aparicio, Sandra Rojas Jiménez, and Juan S. Hernández González. “The Upper Cretaceous (Santonian-Maastrichtian) Phosphate Deposits in the West of the Neiva Subbasin, Upper Magdalena Valley, Colombia”. Boletín Geológico 49, no. 2 (December 28, 2022): 75–96. Accessed November 9, 2026. https://revistas.sgc.gov.co/index.php/boletingeo/article/view/621.