Meloni, Antonio, and Lucilla Alfonsi. “Geomagnetism and Aeronomy Activities in Italy During IGY, 1957/58”. Annals of Geophysics 52, no. 2 (February 25, 2009): 127–135. Accessed April 19, 2024. https://www.annalsofgeophysics.eu/index.php/annals/article/view/4636.