About the Authors

Giulio Cimini

giulio.cimini@gmail.com

Affiliations IMT - School for Advanced Studies, 55100 Lucca, Italy, Istituto dei Sistemi Complessi (ISC-CNR), 00185 Rome, Italy

Matteo Serri

Affiliation Università “Sapienza”, Facoltà di Economia (Dep. MEMOTEF), 00185 Rome, Italy

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceptualization: GC MS Formal analysis: GC MS Investigation: GC MS Methodology: GC MS Resources: GC MS Software: GC Validation: GC MS Visualization: GC Writing original draft: GC MS Writing review & editing: GC