About the Authors
- Dirk Helbing
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* E-mail: dhelbing@ethz.ch
Affiliations ETH Zurich, Zurich, Switzerland, Santa Fe Institute, Santa Fe, New Mexico, United States of America, Collegium Budapest-Institute for Advanced Study, Budapest, Hungary
- Anders Johansson
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Affiliations ETH Zurich, Zurich, Switzerland, Centre for Advanced Spatial Analysis, University College London, London, United Kingdom
Competing Interests
The authors have declared that no competing interests exist.
Author Contributions
Conceived and designed the experiments: DH. Performed the experiments: AFJ. Analyzed the data: DH AFJ. Wrote the paper: DH.