1994 M series - part 4 : radiodetermination service: ITU-R recommendations / ITU-R
1995 M series - part 4 : radiodetermination service: ITU-R recommendations (revised as of 21 October 1995) / International Telecommunication Union
1995 M series - part 5 : mobile satellite services and radiodetermination satellite service: ITU-R recommendations (revised as of 21 October 1995) / International Telecommunication Union
1994 M series - part 5 : mobile satellite services and radiodetermination satellite service: ITU-R recommendations / ITU-R