<bdi><a href="https://en.wikipedia.org/wiki/en:Max_Liebermann" class="extiw" title="w:en:Max Liebermann"><span title="German painter (1847-1935)">Max Liebermann</span></a>
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<a rel="nofollow" class="external text" href="https://www.sothebys.com/en/auctions/ecatalogue/2010/impressionist-modern-art-day-sale-l10005/lot.132.html">Sotheby's, London, 04 February 2010, lot 132</a>