1. Brandt, P. N., Ferguson, S., Scharmer, G. B., Shine, R. A., Tarbell, T. D., Title, A. M., and Topka, K.: 1991, Astron. Astrophys. 241, 219
2. Brandt, P. N., Rutten, R. J., Shine, R. A., and Trujillo Bueno, J.: 1992, in M. S. Giampapa and J. A. Bookbinder (Eds.), Cool Stars, Stellar Systems, and the Sun ,Proc. Seventh Cambridge Workshop, Astron. Soc. Pac. Conf. Series 26, p. 161
3. Brandt, P. N., Scharmer, G. B., Ferguson, S. H., Shine, R. A., Tarbell, T. D., and Title, A. M.: 1988, Mature 335, 238
4. Dame, L.: 1985, in H. U. Schmidt (Ed.), Theoretical Problems in High Resolution Solar Physics ,MPA/LPARL Workshop, Max-Planck-Institut für Physik und Astrophysik MPA 212, München, p. 244
5. Damé, L. and Martić, M.: 1987, Astrophys. J. 314, L15