About the Authors
- Mario A. Bertella
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Affiliations Department of Economics, Sao Paulo State University (UNESP), Sao Paulo, Brazil, Center for Polymer Studies and Department of Physics, Boston University, Boston, Massachusetts, United States of America
- Felipe R. Pires
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Affiliation Companhia do Metropolitano de Sao Paulo,Sao Paulo, Brazil
- Ling Feng
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* E-mail: felney@gmail.com
Affiliations Center for Polymer Studies and Department of Physics, Boston University, Boston, Massachusetts, United States of America, Department of Physics and Centre for Computational Science and Engineering, National University of Singapore, Singapore, Singapore
- Harry Eugene Stanley
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Affiliation Center for Polymer Studies and Department of Physics, Boston University, Boston, Massachusetts, United States of America
Competing Interests
Felipe R. Pires, is affliated with a commercial company, Companhia Metro de Sao Paul. This does not alter the authors' adherence to all PLOS ONE policies on sharing data and materials.
Author Contributions
Conceived and designed the experiments: MAB FRP LF HES. Performed the experiments: MAB FRP LF HES. Analyzed the data: MAB FRP LF HES. Wrote the paper: MAB FRP LF HES.