@article{Piedra:2010lo,
  author = "Piedra, Jonatan",
  title = "{Measurement of the cosmic muon charge asymmetry}",
  doi = "10.22323/1.084.0109",
  journal = "PoS",
  year = 2010,
  volume = "EPS-HEP 2009",
  pages = "109"
}