Marín, L. E., Balcazar, M., Steinich, B. y Hernández-Espriu, J. A. (2008) «Comparison of elevation heights using a Differential Global Positioning System (DGPS) and a Total Station», Geofísica Internacional, 47(1), pp. 81–83. doi: 10.22201/igeof.00167169p.2008.47.1.69.