Propagation in non-ionized media : reports of the CCIR, 1990: (also decisions): annex to volume V / International Telecommunication Union
Propagation in ionized media : reports of the CCIR, 1990: (also decisions): annex to volume VI / International Telecommunication Union
Television and sound transmission (CMTT) : reports of the CCIR, 1990: (also decisions): annex to volume XII / International Telecommunication Union
Broadcasting service (sound) : reports of the CCIR, 1990: (also decisions): annex volume X - part 1 / International Telecommunication Union