Hydrodynamics and phases of flocks

@article{Toner2005HydrodynamicsAP,
  title={Hydrodynamics and phases of flocks},
  author={John Toner and Yuhai Tu and Sriram Ramaswamy},
  journal={Annals of Physics},
  year={2005},
  volume={318},
  pages={170-244}
}
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