• Belehaki, A., and I. Tsagouri (2002), Investigation of the relative bottomside/topside contribution to the total electron content estimates, Ann. Geophys., 45, 7386.
  • Belehaki, A., N. Jakowski, and B. W. Reinisch (2003), Comparison of ionospheric ionization measurements over Athens using ground ionosonde and GPS-derived TEC values, Radio Sci., 38(6), 1105, doi:10.1029/2003RS002868.
  • Denton, M. H., G. J. Bailey, Y. Z. Su, K.-I. Oyama, and T. Abe (1999), High altitude observations of electron temperature and a possible north-south asymmetry, J. Atmos. Sol. Terr. Phys., 61, 775788.
  • Huang, X., and B. W. Reinisch (2001), Vertical electron content from ionograms in real time, Radio Sci., 36, 335342.
  • Jakowski, N., and E. Sardon (1996), Comparison of GPS/IGS-derived TEC data with parameters measured by independent ionospheric probing techniques, in IGS Workshop Proceedings: 1996 International GPS Service (IGS): Analysis Center Workshop 19–21 March 1996, Silver Spring, Maryland, USA, edited by R. E. Neilan, P. Van Scoy, and J. F. Zumberge, pp. 221230, Jet Propul. Lab., Calif. Inst. of Technol., Pasadena, Calif.
  • Reinisch, B. W., and X. Huang (2001), Deducing topside profiles and total electron content from bottomside ionograms, Adv. Space Res., 27, 2330.
  • Reinisch, B. W., X. Huang, A. Belehaki, and J.-C. Jodogne (2001), Bottom and topside ionospheric TEC obtained from ground-based ionosonde measurements, International Beacon Satellite Symposium, Boston Coll., Boston, Mass.
  • Rishbeth, H., and O. K. Garriot (1969), Introduction to Ionospheric Physics, Elsevier, New York.