Mohnen, J. U., and R. Schick. “The Spatial Amplitude Distribution of Volcanic Tremor at Stromboli Volcano (Italy)”. Annals of Geophysics 39, no. 2 (November 25, 1996). Accessed April 24, 2024. https://www.annalsofgeophysics.eu/index.php/annals/article/view/3966.