Li, F., and M. Parrot. “Study of the TEC Data Obtained from the DORIS Stations in Relation to Seismic Activity”. Annals of Geophysics 50, no. 1 (December 25, 2007). Accessed April 25, 2024. https://www.annalsofgeophysics.eu/index.php/annals/article/view/3086.