@article{5022,
  author = {Zhenru Wang and Q.-Y. Qu and D. Luo and Richard McCray and M.-M. Low},
  title = {The semicircular shell of CTB 109},
  year = {1992},
  journal = {The Astrophysical Journal},
  volume = {388},
  pages = {127},
  month = {Jan-03-1992},
  issn = {0004-637X},
  url = {http://adsabs.harvard.edu/full/1992ApJ...388..127W},
  doi = {10.1086/171134},
}