1. A mathematical model of the Earth's plasmasphere and its application in a study of He+ at I=3;Bailey;Ann. Geophys.,1990
2. Bilitza , D. International reference ionosphere 1990, URSI/COSPAR Task Group on the IRI Greenbelt, Md. 1990
3. Progress in modelling the ionospheric peak and topside electron density;Bilitza;Adv. Space Res.,1987
4. Breed , A. M. Investigations of the ionosphere over Australia using satellite transmissions Adelaide, Australia 1996
5. Breed , A. M. A.-M. Vandenberg G. L. Goodwin J. H. Silby E. A. Essex Measurement of the protonosphere in improving position determination using GPS satellites, Workshop on Applications of Radio Science [WARS 95], Digest of Papers D. Skellern J. Steel 3 6 Canberra 1995