@article{4612,
  author = {D. Luo and Richard McCray},
  title = {The circumstellar shell of SN 1987A},
  year = {1991},
  journal = {The Astrophysical Journal},
  volume = {379},
  pages = {659},
  month = {Jan-09-1991},
  issn = {0004-637X},
  url = {http://articles.adsabs.harvard.edu/full/1991ApJ...379..659L},
  doi = {10.1086/170539},
}