1997 SNG Series : satellite news gathering: recommendations / International Telecommunication Union
1994 SNG series : satellite news gathering: ITU-R recommendations / ITU-R
1995 TF series : time signals and frequency standards emissions: ITU-R recommendations (new and revised as of 21 October 1995) / International Telecommunication Union
1997 TF series : time signals and frequency standards emissions: recommendations / ITU-R