@article{7192,
  author = {J. Shull and Joseph Silk},
  title = {Intergalactic shells at large redshift},
  year = {1981},
  journal = {The Astrophysical Journal},
  volume = {249},
  pages = {26},
  month = {Jan-10-1981},
  issn = {0004-637X},
  url = {http://adsabs.harvard.edu/full/1981ApJ...249...26S},
  doi = {10.1086/159256},
}