Eileen Lamprecht, Katharina Fa, Barbara Gasser, Elisa Hämmerle, Olivia Jochum 2011.
<a href="//commons.wikimedia.org/wiki/User:Bauken77" title="User:Bauken77">Bauken77</a>
CC BY 3.0
<span class="int-own-work" lang="en">Own work</span>