1. Adjabshirizadeh, A., Koutchmy, S.: Astron. Astrophys. 89, 88–94 (1980)
2. Adjabshirizadeh, A., Koutchmy, S.: Sol. Phys. 75, 71 (1982)
3. Adjabshirizadeh, A., Koutchmy, S.: Astron. Astrophys. 122, 1–8 (1983)
4. Alfven, H.: Cosmical Electrodynamics. Clarendon, Oxford (1950), 5.38
5. Beckers, J.M., Schröter, E.H.: Sol. Phys. 4, 142 (1968)