@inproceedings{Henn:2013HC,
  author = "Henn, Johannes",
  title = "{Analytic results for multi-loop scattering amplitudes}",
  doi = "10.22323/1.151.0012",
  booktitle = "Proceedings of “Loops and Legs in Quantum Field Theory ” 11th DESY Workshop on Elementary Particle Physics  {\textemdash} PoS(LL2012)",
  year = 2013,
  volume = "151",
  pages = "012"
}