Martín Rincón, C. L. (2022) «The Upper Cretaceous (Santonian-Maastrichtian) phosphate deposits in the west of the Neiva subbasin, Upper Magdalena Valley, Colombia», Boletín Geológico, 49(2), pp. 75–96. doi: 10.32685/0120-1425/bol.geol.49.2.2022.621.