Comparative testing of four ionospheric models driven with GPS measurements

The IGS VTEC maps: a reliable source of ionospheric information since 1998

(2009) M. Hernández-Pajares et al.   JOURNAL OF GEODESY

Development of an HF selection tool based on the Electron Density Assimilative Model near-real-time ionosphere

(2009) M. J. Angling et al.   RADIO SCIENCE

International Reference Ionosphere 2007: Improvements and new parameters

(2008) D. Bilitza et al.   ADVANCES IN SPACE RESEARCH

A new version of the NeQuick ionosphere electron density model

(2008) B. Nava et al.   JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS

An empirical model of the Earth's horizontal wind fields: HWM07

(2008) D. P. Drob et al.   JOURNAL OF GEOPHYSICAL RESEARCH

History, current state, and future directions of ionospheric imaging

(2008) Gary S. Bust et al.   REVIEWS OF GEOPHYSICS