@article{Reyes:2009yF,
  author = "Reyes, Luis",
  title = "{VERITAS Observations of Mrk 421 with Simultaneous Coverage in the X ray Band}",
  doi = "10.22323/1.063.0057",
  journal = "PoS",
  year = 2009,
  volume = "BLAZARS2008",
  pages = "057"
}