@article{Vatagyula-konyv,
  title={in Research in the Decision Sciences for Global Business: Best Papers from the 2013 Annual Conference: The Advantages of Hierarchical Organization: From Pigeon Flocks to Optimal Network Structures},
  author={Zafeiris, Anna and Vicsek, Tamás},
  journal={},
  volume={Chapter 3},
  number={},
  pages={21-34},
  year={2015},
}