<a href="https://en.wikipedia.org/wiki/Matthias_T._J._Grimme" class="extiw" title="en:Matthias T. J. Grimme">Matthias T. J. Grimme</a>
<a href="//commons.wikimedia.org/wiki/User:Tatsuotoko" title="User:Tatsuotoko">Matthias T. J. Grimme</a>, Hamburg
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>