<a href="https://en.wikipedia.org/wiki/Joseph_S._B._Mitchell" class="extiw" title="en:Joseph S. B. Mitchell">Joe Mitchell</a> at the 27th Annual Symposium on Computational Geometry in Paris, France
<a href="//commons.wikimedia.org/wiki/User:David_Eppstein" class="mw-redirect" title="User:David Eppstein">David Eppstein</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>