Warnant, Rene, Urlich Foelsche, Marcio Aquino, Benoit Bidaine, Vadim Gherm, Mohammed Mainul Hoque, Ivan Kutiev, Sandrine Lejeune, Juha-Pekka Luntama, Justine Spits, Hal J. Strangeways, Gilles Wautelet, Nikolay Zernov, and Norbert Jakowski. “Mitigation of Ionospheric Effects on GNSS”. Annals of Geophysics 52, no. 3-4 (April 25, 2009): 373–390. Accessed April 26, 2024. https://www.annalsofgeophysics.eu/index.php/annals/article/view/4585.