Broadcasting service (sound) : recommendations of the CCIR, 1990: (also and resolutions and opinions): volume X - part 1 / International Telecommunication Union
Broadcasting-satellite service (sound and television) : recommendations of the CCIR, 1990: (also and resolutions and opinions): volume X and XI- part 2 / International Telecommunication Union
Broadcasting-satellite service (sound and television) : reports of the CCIR, 1990: (also decisions): annex to volumes X and XI- part 2 / International Telecommunication Union