TY - JOUR T1 - IONOSPHERIC MODELLING AND HF RADIO SYSTEMS AT HIGH LATITUDES. JO - Gec Journal of Research PY - 1986/01/01 AU - Quegan S AU - Milsom JD AU - Herring RN ED - VL - 4 IS - 1 SP - 42 EP - 46 Y2 - 2026/04/11 ER -