1. Aaron, S. 1996, Ph.D. thesis, Brandeis Univ.
2. Alef, W., Preuss, E., Kellermann, K. I. & Gabuzda, D. 1998, in IAU Colloq. 164, Radio Emission from Galactic and Extragalactic Compact Sources, ed. J. A. Zensus, J. M. Wrobel, & G. B. Taylor (San Francisco: ASP), in press