1. M. Singer, ITU SPU BroadbandWorkshop, April 2003, https://www.itu.int/osg/spu/ni/promotebroadband/presentations/11-singer.pdf
2. Digital Agenda for Europe:AEurope 2020 Initiative, http://ec.europa.eu/digital-agenda/.
3. Satellite Communication Systems: Systems, Techniques and Technologies;Maral,2002
4. Viasat 1 : https://www.viasat.com/broadband-satellite-networks/high-capacity-satellitesystem.
5. KA-SAT : http://www.eutelsat.com/en/satellites/the-fleet/EUTELSAT-KA-SAT.html.