@article{4442,
  author = {Alan Stern and J. Shull},
  title = {The influence of Oort clouds on the mass and chemical balance of the interstellar medium},
  year = {1990},
  journal = {The Astrophysical Journal},
  volume = {359},
  pages = {506},
  month = {Jan-08-1990},
  issn = {0004-637X},
  url = {http://articles.adsabs.harvard.edu/full/1990ApJ...359..506S},
  doi = {10.1086/169082},
}