[1]
B. Coppola, V. Lapenna, M. Mancini, and D. Patella, “Application of unconventional geoelectrical methods to the hydrogeological examination of the Mt. S. Croce rock formations (Umbria, Italy) involved in a railway tunnel project”, Ann. Geophys., vol. 37, no. 5 Sup., Nov. 1994.