Anzidei, M., P. Baldi, and E. Serpelloni. “The Coseismic Ground Deformations of the 1997 Umbria-Marche Earthquakes: A Lesson for the Development of New GPS Networks”. Annals of Geophysics 51, no. 2-3 (December 25, 2008). Accessed October 17, 2021. https://www.annalsofgeophysics.eu/index.php/annals/article/view/3029.