2017 Impact factor 2.240


I wish to congratulate the production staff for the precision in reproducing the text and the equations and formulas. It is not so frequent, nowadays.

Loris Ferrari, Università di Bologna, Italy

Paolo Biscari
On behalf of the authors, I gratefully acknowledge the Editors and the Editorial and Production Office for their attention in the revision and editing of the manuscript.

Davide Rotta, Università di Milano Bicocca, Italy

ISSN: 2190-5444 (Electronic Edition)

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