Alte Donau
<a rel="nofollow" class="external text" href="https://web.archive.org/web/20161013032105/http://www.panoramio.com/user/2227067?with_photo_id=17762231">Adolf Riess</a>
CC BY-SA 3.0
<a rel="nofollow" class="external free" href="https://web.archive.org/web/20161013032103/http://www.panoramio.com/photo/17762231">https://web.archive.org/web/20161013032103/http://www.panoramio.com/photo/17762231</a>