RFS series : frequency sharing and coordination between the fixed-satellite service and the fixed service: CCIR recommendations (new and revised as of 6 March 1992) / International Telecommunication Union
RIS series : Inter-service sharing and compatibility: CCIR recommendations (as of 29September 1992) / International Telecommunication Union
RPN series : propagation in non-ionized media: CCIR recommendations (new and revised as of 8 October 1992) / International Telecommunication Union
RS series : fixed-satellite service: CCIR recommendations (new and revised as of 7 March 1992) / International Telecommunication Union