1. Appleton, P. N., Jacobs, M., Struck, C., Borne, K. & Lucas, R., 1997, ApJ, (preprint)
2. Appleton, P. N. & Marston, A. P., 1997, AJ, 113, 201
3. Appleton, P. N., & Struck, C. 1996, Fund. of Cos. Phys, 16, 111.
4. Appleton, P. N. & Struck-Marcell, C., 1987a, ApJ, 318, 103
5. Appleton, P. N. & Struck-Marcell, C., 1987b, ApJ, 312, 566