Please Respect Copyright!

Copies or scans may only be prepared and used within the strict conditions of German copyright law/Act on Copyright and Related Rights (especially Sections 53 and 60). According to German copyright law, copies may only be used for private or scientific use; they may not be used for commercial purposes. Only small parts of a single work or singular articles from journals may be reproduced. In particular, reproductions may not be broadly distributed or made publicly accessible.