@article{4730,
  author = {M. Donahue and J. Shull},
  title = {New photoionization models of intergalactic clouds},
  year = {1991},
  journal = {The Astrophysical Journal},
  volume = {383},
  pages = {511},
  month = {Jan-12-1991},
  issn = {0004-637X},
  url = {http://adsabs.harvard.edu/full/1991ApJ...383..511D},
  doi = {10.1086/170809},
}