The map of ancient underground aqueducts_ a nation-wide project by the Italian Speleological Society
PARISE M., BIXIO R., BURRI E., CALOI V., DEL PRETE S., GALEAZZI C., GERMANI C., GUGLIA P., MENEGHINI M., & SAMMARCO M., 2009, The map of ancient underground aqueducts_ a nation-wide project by the Italian Speleological Society,
15th International Congress of Speleology, Kerrville, Texas, USA, 2009,
URL: http://www.cnr.it/prodotto/i/88916
Data from https://intranet.cnr.it/people/