Marcialis, R., S. Pagnan, G. Bucci, and C. Ottonello. “An Electromagnetic System for Planetary Geophysical Exploration”. Annals of Geophysics 45, no. 2 (December 25, 2002). Accessed September 20, 2021. https://www.annalsofgeophysics.eu/index.php/annals/article/view/3509.