1. Study of the thermospheric–ionospheric response to intense geomagnetic storms at middle latitudes;Belehaki;Phys. Chem. Earth C,2001
2. Chen, X., Landau, H., Vollath, U., 2003. New tools for network RTK integrity monitoring. In: Proceedings of the ION GNSS 2003, 9–12 September 2003, Portland OR, USA, pp. 1355–1360.
3. Chen, X., Vollath, U., Landau, H., Sauer, K., 2004. Will Galileo/modernised GPS obsolete network RTK? In: Proceedings of the European Navigation Conference, 17–19 May 2004, Rotterdam, The Netherlands.
4. Ionospheric threats to space-based augmentation system development. In: Proceedings of the ION GNSS 2004;Datta-Barua,2004
5. Geomagnetic storm effects on the topside ionosphere and plasmasphere: a compact tutorial and new results;Foerster;Surv. Geophys.,2000