@article{Johansson:2013CU,
  author = "Johansson, Henrik  and  Kosower, David A  and  Larsen, Kasper",
  title = "{Maximal unitarity at two loops}",
  doi = "10.22323/1.151.0066",
  journal = "PoS",
  year = 2013,
  volume = "LL2012",
  pages = "066"
}