Ciufolini, Ignazio
Matzner, Richard http://orcid.org/0000-0002-6699-9609
Paolozzi, Antonio
Pavlis, Erricos C. http://orcid.org/0000-0002-9726-7064
Sindoni, Giampiero
Ries, John http://orcid.org/0000-0002-4136-4682
Gurzadyan, Vahe
Koenig, Rolf
Article History
Received: 27 June 2019
Accepted: 11 October 2019
First Online: 4 November 2019
Competing interests
: The authors declare no competing interests.