1. European Commission GALILEO, Mission Requirements Document, Issue 5.0, October 25, 2002.
2. European Space Agency, GALILEO System Requirements Document, Issue 2, Revision 1, ESA-APPNS-REQ-00011, August 01, 2002.
3. European Space Agency, GALILEO System Architecture Executive Summary, Issue 5, RPT/GAL/0109/GLI, May 22, 2002.
4. European Space Agency, GALILEO Constellation Analysis Report—CONAN, Issue 3, RPT/GAL/18/ASP, December 8, 2000.
5. European Space Agency, GALILEO Ground Mission System Requirements Document—GMSREQ, Issue 5, RQS/GAL/0165/GLI, November 7, 2002.