1. Amerian Y, Mashhadi Hossainali M, Voosoghi B, Ghaffari MR (2010) Tomographic reconstruction of the ionospheric electron density in term of wavelets. J Aerosp Sci Technol 7(1):19–29
2. Andreeva ES, Galinov AV, Kunitsyn VE, Mel’nichenko YA, Tereshchenko ED, Filimonov MA, Chernykov SM (1990) Radiotomographic reconstructions of ionization dip in the plasma near the Earth. J Exp Theor Phys Lett 52:145–148
3. Aster RC, Borchers B, Thurber C (2003) Parameter estimation and inverse problems. Elsevier Academic Press, New York
4. Austen JR, Franke SJ, Liu CH (1988) Ionospheric imaging using computerized tomography. Radio Sci 23(3):299–307
5. Bilitza D, Reinisch BW (2008) International reference ionosphere 2007: improvements and new parameters. Adv Space Res 42(4):599–609. doi: 10.1016/j.asr.2007.07.048