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Comparative study of foF2 measurements with IRI-2007 model predictions during extended solar minimum
Estimation of foF2 variations using round-the-world sounding data
Dimension Measurement Using Coordinate System
Variability of the solar soft X-ray irradiance (0.6–2.5nm) with solar activity
Weapon Initialisation and Targeting
von Braun and the lunar-orbit rendezvous decision: finding a way to go to the moon