1. Arnould, M. and Jorrisen, A. 1986, in Advances in Nuclear Astrophysics, ed. E. Vangioni-Flam, J. Audouze, M. Chasse, J. P. Chieze, and J. Tran Thanh Van (Gif sur Avette: Editions Frontières), p. 419.
2. Bao, Z. Y. and Kappeler, F. 1987, At. Data and Nucl. Data Tables, 36, 411.
3. Bidelman, W. P. and Keenan, P. C. 1951, Ap. J., 114, 473.
4. Böhm-Vitense, E. 1980, Ap. J. (Letters), 239, L79.
5. Böhm-Vitense, E., Nemec, J. and Proffitt, C. 1984, Ap. J., 278, 726.