Close Seasonal Variability of GPS-VTEC and Model during Low Solar Activity Period (2006–2007) near the Equatorial Ionization Anomaly Crest location in Chinese Zone,
Liu, G., W. Huang, J. Gong, H. Shen (2013),
Advances in Space Research, 51 p. 366–376,
10.1016/j.asr.2012.09.002.