@article{4390,
  author = {Bon-Chul Koo and William Reach and C. Heiles and Robert Fesen and J. Shull},
  title = {Detection of an expanding H I shell in the old supernova remnant CTB 80},
  year = {1990},
  journal = {The Astrophysical Journal},
  volume = {364},
  pages = {178},
  month = {Jan-11-1990},
  issn = {0004-637X},
  url = {http://adsabs.harvard.edu/full/1990ApJ...364..178K},
  doi = {10.1086/169400},
}