1. EGNOS Fact Sheet 3: Integrity explained. ESA (2005)
2. ESA (2012) European Geostationary Navigation Overlay Service,
www.cbk.waw.pl
Accessed 27 December 2012
3. European Organisation for the Safety of Air Navigation EUROCONTROL (2007) NAV-GNSS Global Navigation Satellite System Training Provided by the IANS ATM Unit. Luxembourg, Kirchberg
4. Flament, D.; Ventura-Traveset, J.: EGNOS The European Navigation Overlay Service – A cornerstone of Galileo. Noordwijk (2006)
5. Konaktchiev, I., Butzmuehlen, C.: Agenda Item 4: First Glance Algorithm Description. AIRSPACE AND NAVIGATION TEAM (EUROCONTROL) (2005)