Vocabulaire (CCV) : recommandations du CCIR, 1990: (ainsi que résolutions et voeux): volume XIII / Unión Internationale des Telecommunications
Administrative texts of the CCIR : recommendations of the CCIR, 1990: (also and resolutions and opinions): volume XIV / International Telecommunication Union
Broadcasting service (sound) : recommendations of the CCIR, 1990: (also and resolutions and opinions): volume X - part 1 / International Telecommunication Union
UIT-R recommendations [CD-ROM] / International Telecommunication Union; Radiocommunication Bureau