1. Solar-Terrestrial Physics;Akasofu,1972
2. Blanch, J., Walter, T., Enge, P. Ionospheric threat model methodology for WAAS, in: Proceedings of the ION Annual Meeting, June 2001, Albuquerque, NM, pp. 508–513, 2001.
3. Description of the FAA’s Local Area Augmentation System (LAAS);Braff;J. Inst. Navigation,1998
4. Datta-Barua, S., Walter, T., Pullen, S., Luo, M., Blanch, J., Enge, P. Using WAAS ionospheric data to estimate LAAS short baseline gradients, in: Proceedings of the ION National Technical Meeting, January 28–30, 2002, San Diego, CA, pp. 523–531, 2002.
5. Ionospheric Radio;Davies,1990