PETTINELLI, E.; PIERDICCA, N.; PIRO, S.; VERSINO, L. Experimental tests for characterization of GPR antenna patterns. Annals of Geophysics, [S. l.], v. 37, n. 5 Sup., 1994. DOI: 10.4401/ag-4170. Disponível em: https://www.annalsofgeophysics.eu/index.php/annals/article/view/4170. Acesso em: 17 sep. 2021.