BRESSAN, G.; GENNARO, V.; GIAIOTTI, D.; STEL, F. Ground measurements of the Earth Electric Field. Gjornâl Furlan des Siencis - Friulian Journal of Science, Udine, Italy, v. 3, n. 5, p. 37–48, 2004. Disponível em: https://www.gfs-fjs.net/index.php/gsf/article/view/57. Acesso em: 3 may. 2025.