Jakowski, N.; Wilken, V.; Schlueter, S.; Stankov, S. M.; Heise, S. (2005): Ionospheric space weather effects monitored by simultaneous ground and space based GNSS signals. Journal of Atmospheric and Solar-Terrestrial Physics, 67, 12, 1074-1084.
Stankov, S. M.; Jakowski, N.; Heise, S. (2005): Reconstruction of ion and electron density profiles from space-based measurements of the upper electron content. Planetary and Space Science, 53, 9, 945-957.