[Reports] / Amer.inst.of aeronautics and astronautics. N 90-0288 : ionospheric environment : understanding,predictability and influences on satellite and communication systems; Rep.presented at the AIAA 28th aerospace sciences meet.Jan.8-11,1990/Reno(Nv) / E.Szuszczewicz, 1990. - 11 p. - Текст : непосредственный.