@article{Baikov:20182p,
  author = "Baikov, Pavel  and  Chetyrkin, Konstantin",
  title = "{No-$\pi$ Theorem for Euclidean Massless Correlators}",
  doi = "10.22323/1.303.0008",
  journal = "PoS",
  year = 2018,
  volume = "LL2018",
  pages = "008"
}