Viktor Korchnoi &amp; Viswanathan Anand, Hoogovens Chess Tournament 1990
Fotoburo De Boer
<a rel="nofollow" class="external text" href="https://hdl.handle.net/21.12102/0f72ca37-eaf2-fe94-33a9-bcbe1866faa3">Noord-Hollands Archief</a>, NL-HlmNHA 1478 31803K00 28