@misc{saracco2015detecting,
  title={Detecting early signs of the 2007-2008 crisis in the world trade},
  author={Fabio Saracco and Riccardo Di Clemente and Andrea Gabrielli and Tiziano Squartini},
  year={2015},
  eprint={1508.03533},
  archivePrefix={arXiv},
  primaryClass={physics.soc-ph},
  doi={10.1038/srep30286},
  url={https://arxiv.org/abs/1508.03533}
}