Characterization of cavities using GPR, LIDAR and GNSS techniques

M.A. Conejo-Martín, T.R. Herrero-Tejedor, J. Lapazaran, E. Pérez-Martín, J. Otero, J.F. Prieto y J. Velasco (2015). Characterization of cavities using GPR, LIDAR and GNSS techniques. Pure and Applied Geophysics, 172, doi:10.1007/s00024-014-0985-6 (PUBLICADO On-line 25 nov 2014).