1997 BT series : Broadcasting service (television): ITU-R recommendations / ITU-R
ITU-R recommendations and reports / International Telecommunication Union
1997 M series - part 5 : mobile satellite services and radiodetermination satellite service: recommendations / ITU-R
Land mobile service excluding IMT-2000 : supplement 1 to volume 1997 M Series - part 1 / ITU-R