@article{Marzolla:2017oD,
  author = "Marzolla, Andrea",
  title = "{The 4D on-shell 3-point amplitude in spinor-helicity formalism and BCFW recursion relations}",
  doi = "10.22323/1.296.0002",
  journal = "PoS",
  year = 2017,
  volume = "Modave2016",
  pages = "002"
}