Aranzulla, Massimo, Flavio Cannavò, and Simona Scollo. “Detection of Volcanic Plumes by GPS: The 23 November 2013 Episode on Mt. Etna”. Annals of Geophysics 57 (February 27, 2015). Accessed March 28, 2024. https://www.annalsofgeophysics.eu/index.php/annals/article/view/6622.