1. Athay, R.G.: The Solar Chromosphere and Corona: The Quiet Sun, Reidel, Dordrecht (1976).
2. Bray, R.J., Loughhead, R.E.: The Solar Granulation, Chapman and Hall, London (1967).
3. Bray, R.J., Loughhead, R.E.: The Solar Chromosphere, Chapman and Hall, London (1974).
4. Gibson, E.A.: The Quiet Sun, NASA SP-303, Washington (1973).
5. Mihalas, D.: Stellar Atmospheres, Freeman, San Francisco (1978).