What is Happening Near S~q Focus?
Variations of the Temperatures in the Mesopause and Lower Thermospheric Region with Solar Activity
Variations of the Ionosphere and Related Solar Fluxes During Solar Cycles 21 and 22
Two Stream Instability in E Region Over Magnetic Equator During Morning Hours
The Total Ozone and UV Solar Radiation Over Stara Zagora, Bulgaria
The Possible Coupling of the Stratosphere and Lower Ionosphere at Middle Latitudes
The Effect of Local Irregularities on Large-Scale Ionospheric Currents
Testing of Solar EUV Flux Models Using 5577Angstrom, 6300Angstrom and 7320Angstrom Dayglow Emissions
Temporal and Spatial Variations in the Intensity Ratio of N~2 1st and 2nd Positive Bands in Sprites
Studies of the E-Region Ion-Neutral Collision Frequency Using the EISCAT Incoherent Scatter Radar
Structure and Dynamics of Polar Patches Above Casey, Antarctica
Solar Wind Dynamic Pressure Enhancements and Polar Auroras
Solar EUV and Ionospheric Parameters: A Brief Assessment