@article{Conde:2014bf,
  author = "Conde, Eduardo",
  title = "{Physics from the S-matrix: Scattering Amplitudes without Lagrangians}",
  doi = "10.22323/1.201.0005",
  journal = "PoS",
  year = 2014,
  volume = "Modave 2013",
  pages = "005"
}