1. Zhang Hongping, Ping Jinsong, Zhu Wenyao. Brief review of the ionospheric delay models[J]. Prog. Astron., 2006, 24(1):16-25. In Chinese (章红平,平劲松,朱文耀,等.电离层延迟改正模型综述[J]. 天文学进展, 2006, 24(1):16-25)
2. Huang Wengeng, Chen Yanhong, Shen Hua, Zhuang Chunbo．Study of ionospheric TEC horizontal gradient by means of GPS observations[J]. Chin. J. Space Sci., 2009, 29 (2): 183-187. In Chinese (黄文耿, 陈艳红, 沈华, 庄淳孛. 用GPS观测研究电离层TEC水平梯度[J]. 空间科学学报, 2009, 29 (2): 183-187)
3. Zhang Hongping, Han Wenhui. Modeling global ionospheric delay with IGS ground-based GNSS observations[J]. Geomat. Inf. Sci. Wuhan Univ., 2012, 37(10): 1186-1189. In Chinese (章红平, 韩文慧. 地基GNSS全球电离层延迟建模[J]. 武汉大学学报, 2012, 37(10):1186-1189)
4. Yuan Yunbin, Huo Xingliang. Study on the models and methods of obtaining ionospheric delay of GPS signal precisely[J]. Prog. Nat. Sci., 2006, 26(1):40-48. In Chinese (袁运斌, 霍星亮. 精确求定GPS信号的电离层延迟的模型与方法研究 [J]. 自然科学进展, 2006, 26(1):40-48)
5. Bidaine B, Warnant R. Ionosphere modeling for Galileo single frequency users: illustration of the combination of the NeQuick model and GNSS data ingestion[J]. Adv. Space Res., 2010, 1(9):51-61