Fixed service at frequences below about 30 Mhz : recommendations of the CCIR, 1990: (also and resolutions and opinions): volume III / International Telecommunication Union
Fixed-satellite service : recommendations of the CCIR, 1990: (also and resolutions and opinions): volume IV - part 1 / International Telecommunication Union
XVIIth Plenary Assembly, Dusseldorf : recommendations of the CCIR: / International Telecommunication Union
Fixed service using radio-relay systems : recommendations of the CCIR, 1990: (also and resolutions and opinions): volume IX - part 1 / International Telecommunication Union
Fixed service at frequences below about 30 Mhz : reports of the CCIR, 1990: (also decisions): annex to volume III / International Telecommunication Union
Fixed-satellite service : reports of the CCIR, 1990: (also decisions): annex to volume IV - part 1 / International Telecommunication Union
Frequency sharing and coordination between systems in the fixed-satellite service and radio-relay systems : reports of the CCIR, 1990: (also decisions): annex to volumes IV and IX - part 2 / International Telecommunication Union
Fixed service using radio-relay systems : reports of the CCIR, 1990: (also decisions): annex to volume IX - part 1 / International Telecommunication Union