**2. Publications Statistics**

The summary of the call for papers for this Special Issue on the 28 manuscripts submitted: rejected (12; 43%) and published (16; 67%).

The submitted manuscripts come from many countries and are summarized in Table 1. For this statistic only the first affiliation of the authors has been considered, in which it gives the opportunity to observe 66 authors from nine countries. Note that it is common for a manuscript to be signed by more than one author and for authors to belong to different affiliations. The average number of authors per published manuscript in this Special Issue was seven authors.


**Table 1.** Statistics of authors by country.
