RTF, RSA and RRA series : science services: CCIR recommendations (new and revised as of 9 August 1992) / International Telecommunication Union
Fixed-satellite service : supplement 1 to volume 1997 S Series / International Telecommunication Union
1995 SA series : space applications and meteorology: ITU-R recommendations (new and revised as of 21 October 1995) / International Telecommunication Union
1994 SA series : space applications: ITU-R recommendations / ITU-R