Propagation in ionized media : reports of the CCIR, 1990: (also decisions): annex to volume VI / International Telecommunication Union
Standard frequencies and time signals : reports of the CCIR, 1990: (also decisions): annex to volume VII / International Telecommunication Union
Broadcasting service (sound) : reports of the CCIR, 1990: (also decisions): annex volume X - part 1 / International Telecommunication Union
RF series : fixed service: CCIR recommendations: (new and revised as of 8 March 1992) / International Telecommunication Union