Bogatyrev S. The Helmet of Ivan the Terrible in the Context of Court Culture Written by Сосницкий Дмитрий Александрович on 22 December 2014.
Bogatyrev, S. N. Does Size Matter?The Results of the Debate about Ceremonial Headgear Written by Сосницкий Дмитрий Александрович on 01 July 2015.
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