Possible malfunctioning due to migration to new site
In the next weeks some DOIs and some articles could not be working.
On January 9, 2018, the migration process on the new Editorial System platform has statred.

This implies a mass update of all the existing (about one thousand) DOI codes, as well as a thorough check of all existing articles.

The Technical Editor has already started this process, but in the meantime some article could not be yet present on the site, or be misplaced, or have its DOI not responding.