1. Lamb, D. Ann. N.Y. Acad. Sci. (in the press).
2. Hurley, K. AIP Conf. Proc. Santa Cruz Summer Workshop (ed. Woosley, S.) (AIP, New York, 1984).
3. Laros, J. G. et al. AIP Conf. Proc. Santa Cruz Summer Workshop (ed. Woosley, S.) (AIP, New York, 1984).
4. Gilman, D. et al. Astrophys. J. 236, 951–957 (1980).
5. Liang, E. P. AIP Conf. Proc. No. 101, (eds Burns, M. L., Harding, A. K. & Ramaty, R.) 76 (AIP, New York, 1983).