Fea, G. “Esperienz E Di Controllo Sulla Misura Della Temperatura Nella Substratosfera”. Annals of Geophysics 1, no. 2 (November 25, 1948): 239–245. Accessed May 3, 2024. https://www.annalsofgeophysics.eu/index.php/annals/article/view/6053.