<https://www.e60-forum.de/forum/index.php?thread/88-fragen-zum-head-up-display/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.e60-forum.de/forum/index.php?thread/88-fragen-zum-head-up-display/&postID=525#post525>