1. Eddington, A. S. The Internal Constitution of the Star (Cambridge Univ. Press, 1930).
2. Cox, J. P. & Giuli, R. T. Principles of Stellar Structure, Vol. 2, 1106–1122 (Gordon and Breach, New York, 1968).
3. Noels, A. & Gabriel, M. Astr. Astrophys. 101, 215–222 (1981).
4. Maeder, A. Astr. Astrophys. 147, 300–308 (1985).
5. Cox, A. N. & Cahn, J. H. Astrophys. J. 326, 804–812 (1988).