Disclaimer for External Links and References: The authors of BLUE C platform learning contents hereby expressly declare that at the time the contents were developed no illegal content was discernible on the linked pages included in the materials (external links and references). The authors have no influence on the current and future design, content or authorship of the linked pages and therefore they hereby expressly distance themselves from all contents of all linked pages that were changed after the link was set. The European Commission’s support   for the BLUE C project does not constitute an endorsement of the platform contents, which reflect the views only of the authors, and the Commission cannot be held responsible for any   use which may be made of the information contained therein.