Fixed-satellite service : recommendations of the CCIR, 1990: (also and resolutions and opinions): volume IV - part 1 / 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
Propagations dans les milieux non ionisés : recommandations du CCIR, 1990: (ainsi que résolutions et voeux): volume V / Union Internationale des Télécommunications
Propagation in ionized media : recommendations of the CCIR, 1990: (also and resolutions and opinions): volume VI / International Telecommunication Union