@article{Varnes:2013G5,
  author = "Varnes, Erich",
  title = "{Combination of CDF and D0 measurements of the W boson helicity in top quark decays}",
  doi = "10.22323/1.174.0234",
  journal = "PoS",
  year = 2013,
  volume = "ICHEP2012",
  pages = "234"
}