@article{1202,
  author = {Joseph Collins and J. Shull and M. Giroux},
  title = {Highly Ionized High-Velocity Clouds toward PKS 2155-304 and Markarian 509},
  year = {2004},
  journal = {The Astrophysical Journal},
  volume = {605},
  pages = {216-229},
  month = {Oct-04-2004},
  issn = {0004-637X},
  url = {http://stacks.iop.org/0004-637X/605/i=1/a=216},
  doi = {10.1086/382269},
}