GPS-TEC Variation during Low to High Solar Activity Period (2010–2014) under the Northern Crest of Indian Equatorial Ionization Anomaly Region,
Nilesh, C. Patel, P. K. Sheetal, N. P. Kamlesh (2017),
Scientific Research Publising. Positioning, 8 p. 13–35,
10.4236/pos.2017.82002.