Poupinet, G., G. Sauvage, and J. P. Cauzac. “Development of an Early-Warning System for Monitoring Remote Volcanoes”. Annals of Geophysics 39, no. 2 (November 25, 1996). Accessed April 19, 2024. https://www.annalsofgeophysics.eu/index.php/annals/article/view/3965.