About the Authors
- Petter Holme
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* E-mail: holme@skku.edu
Affiliations Department of Energy Science, Sungkyunkwan University, Suwon, Korea, IceLab, Department of Physics, Umeå University, Umeå, Sweden, Department of Sociology, Stockholm University, Stockholm, Sweden
Competing Interests
The author has declared that no competing interests exist.
Author Contributions
Conceived and designed the experiments: PH. Performed the experiments: PH. Analyzed the data: PH. Contributed reagents/materials/analysis tools: PH. Wrote the paper: PH.