Aksnes, A., J. Stadsnes, N. Østgaard, G. A. Germany, K. Oksavik, R. R. Vondrak, A. Brekke, and U. P. Løvhaug, Height profiles of the ionospheric electron density derived using space-based remote sensing of UV and X ray emissions and EISCAT radar data: A ground-truth experiment, Journal of Geophysical Research (Space Physics), 111, 02301, 2006.
Palmroth, M., P. Janhunen, G. Germany, D. Lummerzheim, K. Liou, D. N. Baker, C. Barth, A. T. Weatherwax, and J. Watermann, Precipitation and total power consumption in the ionosphere: Global MHD simulation results compared with Polar and SNOE observations, Annales Geophysicae, 24, 861-872, 2006.