DB 628 544 (LEW 21373/1993), <a href="https://de.wikipedia.org/wiki/Ulm" class="extiw" title="de:Ulm">Ulm</a>, 13.04.2017
<a href="//commons.wikimedia.org/wiki/User:Joachim_Lutz" title="User:Joachim Lutz">Joachim Lutz</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>