1. Description of the 1965–71 ionospheric model used in the Definitive System (DODS);Bent;Report DBA-Systems,1970
2. New formulas for the IRI electron density profile in the topside and middle ionosphere;Rawer;Adv. Space Res.,1985
3. A simple empirical method for estimating the height and semi thickness of the F2-layer at the Argentine Islands Graham Land, British Antarctic Survey;Dudeney;Sci. Rep.,1974
4. A global model for the height of the F2-peak using M(3000) values from the CCIR numerical map;Bilitza;Telecomm. J.,1979
5. An improved phenomenological model of the ionospheric density;Chiu;J. Atmos. Terr. Phys.,1975