1. A. O. Benz, Liv. Rev. Solar Phys. 5, 1 (2008).
2. M. Aschwanden, Physics of the Solar Corona (Springer, Berlin, Heidelberg, 2005).
3. J. Heyvaerts, E. R. Priest, and D. M. Rust, Astrophys. J. 216, 123 (1977).
4. B. V. Somov, in Multi-Wavelength Investigations of Solar Activity, Ed. by A. V. Stepanov, E. E. Benevolenskaya, and A. G. Kosovichev, IAU Symp. 223, 417 (2004).
5. A. A. Pevtsov, M. A. Berger, A. Nindos, A. A. Norton, and L. van Driel-Gesztelyi, Space Sci. Rev. 186, 285 (2014).