López-Cuervo Medina, S., R. Rodríguez-Solano Suárez, and A. De Blas Gutiérrez de la Vega. 2009. “Integrating Photogrammetry into Raster and Vector Information Systems for Setting Databases for Engineering Projects”. Spanish Journal of Agricultural Research 7 (3), 495-502. https://doi.org/10.5424/sjar/2009073-434.