@article{Dowdall:201379,
  author = "Dowdall, Rachel  and  Barrett, John  and  Fairbairn, Winston  and  Hellmann, Frank  and  Pereira, Roberto",
  title = "{Asymptotic analysis of Lorentzian spin foam models}",
  doi = "10.22323/1.140.0009",
  journal = "PoS",
  year = 2013,
  volume = "QGQGS 2011",
  pages = "009"
}