1. INTERFACE SPECIFICATION (2012) I S—GPS—200—g
2. INTERFACE SPECIFICATION (2012) I S GPS—705—c
3. INTERFACE SPECIFICATION (2010) I S GPS—800—a
4. European Space Agency (2014) GALILEO open service signal in space interface control document (GAL OS SIS ICD) (Ver 1.2)
5. GLONASS INTERFACE CONTROL DOCUMENT (2008) (Ver 5.1)