1. Aldcroft, T., Bechtold, L., Foltz, C. (1997): in “Mass Ejection from AGN”, ASP Conf. Ser., Vol. 128, ed. N. Arav, I. Shlosman, and R.J. Weymann, p 25
2. Anderson S.F., Weymann, R.J., Foltz, C.B., Chafee, F.H.
3. Arav, N., Li, Z.Y. (1994): ApJ, 427, 700
4. Arav, N., Li, Z.Y., Begelman, M.C. (1994): ApJ, 432, 62
5. Arav, N., Begelman, M.C. (1994): ApJ, 434, 479 (paper III)