@conference{5291,
  author = {Mitchell Begelman},
  title = {Thermal and nonthermal processes in active galactic nuclei},
  year = {1993},
  journal = {ASP},
  publisher = {ASP},
  url = {http://adsabs.harvard.edu/full/1994ASPC...54...51B},
  note = {JILA Pub. 5065},
}