<a href="https://en.wikipedia.org/wiki/Yuri_Vasilyevich_Gulyayev" class="extiw" title="en:Yuri Vasilyevich Gulyayev">Yuri Vasilyevich Gulyayev</a>, member of <a href="https://en.wikipedia.org/wiki/Russian_Academy_of_Sciences" class="extiw" title="en:Russian Academy of Sciences">Russian Academy of Sciences</a>
<a href="//commons.wikimedia.org/wiki/User:Alex_Spade" title="User:Alex Spade">Alex Spade</a>
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<span class="int-own-work" lang="en">Own work</span>