Schematische Darstellung Penditifkuppel. Eigene Zeichnung. Public Domain
<a href="https://en.wikipedia.org/wiki/de:User:Rainer_Zenz" class="extiw" title="w:de:User:Rainer Zenz">Rainer Zenz</a> at <a href="https://en.wikipedia.org/wiki/de:" class="extiw" title="w:de:">German Wikipedia</a>
25 March 2004 (original upload date)
Transferred from <span class="plainlinks"><a class="external text" href="https://de.wikipedia.org">de.wikipedia</a></span> to Commons.