A., Belluigi. “Bifilarità Elettrodiche Aperte E Chiuse Nei Processi « EGO »”. Annals of Geophysics 13, no. 1 (November 25, 1960): 43–78. Accessed April 25, 2024. https://www.annalsofgeophysics.eu/index.php/annals/article/view/5466.