@article{zhao2015identifying,
  title={Identifying effective multiple spreaders by coloring complex networks},
  author={Zhao, Xiang-Yu and Huang, Bin and Tang, Ming and Zhang, Hai-Feng and Chen, Duan-Bing},
  journal={EPL (Europhysics Letters)},
  volume={108},
  number={6},
  pages={68005},
  year={2015},
  publisher={IOP Publishing}
}