5 citations as recorded by crossref.

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2. Topside ionospheric scale height analysis and modelling based on radio occultation measurements S. Stankov & N. Jakowski https://doi.org/10.1016/j.jastp.2005.10.003
3. Reconstruction of ion and electron density profiles from space-based measurements of the upper electron content S. Stankov et al. https://doi.org/10.1016/j.pss.2005.04.008
4. RETRIEVAL OF ELECTRON DENSITY PROFILE FOR KOMPSAT-5 GPS RADIO OCCULTATION DATA PROCESSING SYSTEM W. Lee et al. https://doi.org/10.5140/JASS.2007.24.4.297
5. Validation of international reference ionosphere models using in situ measurements from GRACE K-band ranging system and CHAMP planar Langmuir probe C. Lee et al. https://doi.org/10.1007/s00190-011-0442-6