@article{Chetyrkin:2008MR,
  author = "Chetyrkin, Konstantin",
  title = "{Massless propagators: applications in QCD and QED}",
  doi = "10.22323/1.048.0023",
  journal = "PoS",
  year = 2008,
  volume = "RAD COR 2007",
  pages = "023"
}