@misc{li2018network,
  title={Network analysis of the worldwide footballer transfer market},
  author={Ming-Xia Li and Wei-Xing Zhou and H. Eugene Stanley},
  year={2018},
  eprint={1811.00300},
  archivePrefix={arXiv},
  primaryClass={physics.soc-ph},
  doi={10.1209/0295-5075/125/18005},
  url={https://arxiv.org/abs/1811.00300}
}