<a href="https://en.wikipedia.org/wiki/%D0%9A%D0%BE%D1%80%D0%BE%D1%82%D0%B0%D0%B5%D0%B2,_%D0%92%D0%BB%D0%B0%D0%B4%D0%B8%D1%81%D0%BB%D0%B0%D0%B2_%D0%9D%D0%B8%D0%BA%D0%BE%D0%BB%D0%B0%D0%B5%D0%B2%D0%B8%D1%87" class="extiw" title="w:Коротаев, Владислав Николаевич">Владислав Николаевич Коротаев</a>, 2018.
<a href="//commons.wikimedia.org/wiki/User:Ivtorov" title="User:Ivtorov">Ivtorov</a>
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<span class="int-own-work" lang="en">Own work</span>