1. Mihalas, D. (1991) in Stellar Atmospheres: Beyond Classical Models, Eds. L. Crivellari, I. Hubeny, D.G. Hummer, NATO ASI Ser., Vol. 341 127.
2. Thomas, R. and Athay, R. (1964) Physics of the Solar Chromosphere, Interscience, New York.
3. Auer, L., Fabiani Bendicho P. and Trujillo Bueno, J. (1994) Astron. Astrophys.
292 599.
4. Stenflo, J.O. (1994) Solar Magnetic Fields (Polarized Radiation Diagnostics), Kluwer Academic Publishers, Dordrecht.
5. Mihalas, D. and Mihalas, B.W. (1984) Foundations of Radiation Hydrodynamics, Oxford University Press, New York (1999 - second edition).