Administrative texts of the CCIR : recommendations of the CCIR, 1990: (also and resolutions and opinions): volume XIV / International Telecommunication Union
Textes administratives du CCIR : recommandations du CCIR, 1990: (ainsi que questions, résolutions, voeux et décisions): volume XIV / Union Internationale des Télécommunications
UIT-R recommendations [CD-ROM] / International Telecommunication Union; Radiocommunication Bureau
Spectrum utilization and monitoring : reports of the CCIR, 1990: (also decisions): annex to volume I / International Telecommunication Union