@conference{9208,
  author = {Mitchell Begelman},
  title = {Magnetic fields in the central engines of active galactic nuclei},
  year = {1989},
  journal = {unknown},
  month = {00/1989},
  publisher = {Dordrecht and Boston, MA, Kluwer Academic Publishers},
  address = {Noto, Italy},
  url = {http://link.springer.com/chapter/10.1007/978-94-009-2401-7_27},
  note = {JILA Pub. 4006},
}