1. E. L. Afraimovich, “GPS Global Detection of the Ionospheric Response to Solar Flares,” Radio Sci. 35, 1417–1424 (2000).
2. E. L. Afraimovich, Yu. B. Bashkuev, O. I. Berngardt, et al., “Detection of Traveling Ionospheric Disturbances Based on Data of Simultaneous Measurements of Electron Density, Total Electron Content, and Doppler Frequency Shift at the ISZF Radar Complex,” Geomagn. Aeron. 44(4), 463–475 (2004) [Geomagn. Aeron. 44, 423–434 (2004)].
3. G. I. Grigor’ev, “Traveling Ionospheric Disturbances: A Review,” Izv. Vyssh. Uchebn. Zaved., Radiofiz. 11(1), 5–26 (1999).
4. K. Hocke and K. Schlegel, “A Review of Atmospheric Gravity Waves and Traveling Ionospheric Disturbances: 1982–1995,” Ann. Geophys. 14(5), 917–940 (1996).
5. B. Hofmann-Wellenhof, H. Lichtenegger, and J. Collins, Global Positioning System: Theory and Practice (Springer-Verlag Wien, New York, 1992).