<bdi><a href="https://en.wikipedia.org/wiki/en:Vilhelm_Hammersh%C3%B8i" class="extiw" title="w:en:Vilhelm Hammershøi"><span title="Danish artist (1864-1916)">Vilhelm Hammershøi</span></a>
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1. <a rel="nofollow" class="external text" href="http://www.epdlp.com/cuadro.php?id=472">epdlp.com</a><br>2. <a rel="nofollow" class="external text" href="http://www.sothebys.com/en/auctions/ecatalogue/2014/19th-century-european-paintings-l14102/lot.40.html">Sotheby's London, 10 December 2014, not for sale, only as a refrence</a>