Relatório : workshop sobre ONP para sistemas de terminais de satélites: Bruxelas, 16/02/93 / Instituto das Comunicações de Portugal
The 1993 satellite systems handbook / ed. PBI - Phillips Business Information
VSATS in Europe : Lower costs and regulation mean more market momentum: 25th May 1993, Hyatt Carlton Tower Hotel, London / org. International Business Communications
Satellite communications systems : systems, techniques and technology / G. Maral, M. Bousquet
Satellite communications : mobile and fixed services / ed. Michael J. Miller, Branka Vucetic, Les Berry
Principles of communications satellites / Gary D. Gordon and Walter L. Morgan