@article{Cristoforetti:20141m,
  author = "Cristoforetti, Marco",
  title = "{Lefschetz thimbles and sign problem: first results in 0 and 4 dimensional field theories}",
  doi = "10.22323/1.193.0010",
  journal = "PoS",
  year = 2014,
  volume = "QCD-TNT-III",
  pages = "010"
}