Details Publication date26 January 2015AuthorDirectorate-General for Energy Files 24 SEPTEMBER 2021Final technical reportEnglish(2.05 MB - PDF)Download 24 SEPTEMBER 2021BACKGROUND DOCUMENT: Literature reportEnglish(4.23 MB - PDF)Download 24 SEPTEMBER 2021BACKGROUND DOCUMENT: Survey resultsEnglish(2.62 MB - PDF)Download 24 SEPTEMBER 2021BACKGROUND DOCUMENT: Assessment of scope expansionEnglish(1.87 MB - PDF)Download 24 SEPTEMBER 2021BACKGROUND DOCUMENT: Comments on first findings reportEnglish(521.18 KB - PDF)Download