@article{Frederix:2016wa,
  author = "Frederix, Rikkert",
  title = "{Spin Polarisation of ttbar + gamma gamma production at NLO+PS}",
  doi = "10.22323/1.276.0163",
  journal = "PoS",
  year = 2016,
  volume = "LHCP2016",
  pages = "163"
}