<a href="https://en.wikipedia.org/wiki/Coxeter-Dynkin_diagram" class="extiw" title="w:Coxeter-Dynkin diagram">w:Coxeter-Dynkin diagram</a> element
<a href="//commons.wikimedia.org/wiki/User:GKFX" title="User:GKFX">GKFX</a>
<span class="int-own-work" lang="en">Own work</span>