Çepni, Murat Selim, and Erman Şentürk. “Geometric Quality Term for Station-Based Total Electron Content Estimation”. Annals of Geophysics 59, no. 1 (February 24, 2016): A0107. Accessed March 29, 2024. https://www.annalsofgeophysics.eu/index.php/annals/article/view/6803.