@conference{5746,
  author = {J. Shull},
  title = {Supernovae, supernova remnants, and superbubbles},
  year = {1995},
  publisher = {Astronomical Society of the Pacific},
  url = {http://adsabs.harvard.edu/full/1995ASPC...73..365S},
  note = {JILA Pub. 5314},
}