<bdi><a href="https://en.wikipedia.org/wiki/en:Carl_Frederik_S%C3%B8rensen" class="extiw" title="w:en:Carl Frederik Sørensen"><span title="Danish artist (1818-1879)">Carl Frederik Sørensen</span></a>
</bdi>
<a rel="nofollow" class="external text" href="http://www.sothebys.com/en/auctions/ecatalogue/2008/marine-sale-l08135/lot.31.html">Sotheby's, London, 09 December 2008, lot 31</a>