1. CCIR. 1978. Mobile Services. Recommendations and reports of the CCIR XIVth plenary assembly. 381–399. Kyoto, Volume VIII, Rep. 594-1
2. M.B. Johnson, Proc. Maritime and Aeronautical Satellite Communication and Navigation, IEE Conference, 1978
3. K. Miya, Satellite communications technology. KDD Engineering and Consulting Ltd., English Ed., 1981
4. N.V. Afzulpurkar, Ma Li, G.R. Dunlop, G.R. Johnson, Proc. NELCON'88, Christchurch, New Zealand, 1988, pp. 52–58