All documents are available in pdf-format. To download a document, we ask to follow this instruction:

(1) Click on the link of the document which you want to download with
      your right mouse button
(2) Choose out «Safe target as…» and click the left mouse button
(3) Follow the instructions of your operating system to choose
      out the folder where you want to safe the file.
(4) Or simply left click on the links to open them directly in your browser.