If you want to use one or more figure, a brief paragraph, or tables from a publication of the SGI (Italian Geological Society), SGI considers this to be fair usage, and you need no formal permission and no fees are assessed unless you or your publisher require a formal permission letter. In that case, you should print a copy of this document and present it to your publisher.
An author has the right to use his or her article or a portion of the article in a thesis or dissertation without requesting permission from the SGI, provided the bibliographic citation and the SGI copyright credit line are given on the appropriate pages.