Pikridas, C.; Bitharis, S.; Katsougiannopoulos, S.; Spanakaki, K.; Karolos, I.-A. Study of TEC Variations Using Permanent Stations GNSS Data in Relation With Seismic Events. Application on Samothrace Earthquake of 24 May 2014. GAC 2019, 45 (3), 137-146. https://doi.org/10.3846/gac.2019.10246.