Massaro, Emanuele http://orcid.org/0000-0002-9287-3743
Ganin, Alexander http://orcid.org/0000-0003-2193-0373
Perra, Nicola
Linkov, Igor
Vespignani, Alessandro
Article History
Received: 26 September 2017
Accepted: 5 January 2018
First Online: 30 January 2018
Competing Interests
: The authors declare that they have no competing interests.