TY - JOUR T1 - THE MID-LATITUDE TROUGH IN THE ELECTRON-CONCENTRATION OF THE IONOSPHERIC F-LAYER - A REVIEW OF OBSERVATIONS AND MODELING JO - J ATMOS TERR PHYS PY - 1983/01/01 AU - MOFFETT RJ AU - QUEGAN S ED - VL - 45 IS - 5 SP - 315 EP - 343 Y2 - 2025/06/30 ER -