1. N.R. Simon, Ap.J.(Letters)260, L87(1982).
2. G.K. Andreasen, Astron.Astrophys. 201, 72 (1988).
3. A. Cox, “Solar Opacities Constrained by Solar Neutrinos and Solar Oscillation,” this volume.
4. C. Smith, J. Foster, and S. Davidson, in 6th APS Topical Conference on Atomic Processes in Hot, Dense Plasmas, September 28-October 2, 1987, Santa Fe, NM.
5. A. Cox, Stars and Stellar Structure, ed. L. Aller and D. McLaughlin(University of Chicago Press, Chicago ) 1965;