1. S. Pulinets, D. Ouzounov, J. Asian Earth. 41, 4 (2011)
2. F.T. Freund, Acta Geophys. 58, 5 (2010)
3. F. Freund, J. Asian Earth. 41, 41 (2011)
4. V. Tramutoli, V. Cuomo, C. Filizzola, N. Pergola, Remote Sens. Eniron. 96, 3 (2005)
5. X. Lu, Q.Y. Meng, X.F. Gu, X.D. Zhan, T. Xie, F. Geng, Adv. Space Res. 58, 6 (2016)