Eric Luth and Liv Inger Somby at Wikimania 2019
<a href="//commons.wikimedia.org/wiki/User:Astrid_Carlsen_(WMNO)" title="User:Astrid Carlsen (WMNO)">Astrid Carlsen (WMNO)</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>