Alberti, G., L. Ciofaniello, M. Della Noce, S. Esposito, G. Galiero, R. Persico, M. Sacchettino, and S. Vetrella. “A Stepped Frequency GPR System for Underground ProspectingGiovanni Galiero, Raffaele Persico, Marco Sacchettino and Sergio Vetrella”. Annals of Geophysics 45, no. 2 (December 25, 2002). Accessed May 13, 2026. https://www.annalsofgeophysics.eu/index.php/annals/article/view/3499.