Efficient spectrum utilization at LF and MF demands for both omnidirectional and directional antennas whose characteristics and performance should be known as accurately as possible.
ITU-R BS.1386-1 FRENCH-2001 Referenced Document
ITU-R BS.1195 Transmitting antenna characteristics at VHF and UHF*, 2013-01-01 Update
ITU-R BS.705 HF transmitting and receiving antennas characteristics and diagrams