About the Authors

Irene Simonini

Affiliation Dipartimento di Matematica, Politecnico di Milano, Milano, Italy

Anna Pandolfi

anna.pandolfi@polimi.it

Affiliation Dipartimento di Ingegneria Civile ed Ambientale, Politecnico di Milano, Milano, Italy

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: AP IS. Performed the experiments: IS. Analyzed the data: IS AP. Wrote the paper: AP IS.