Lyubashits, Valentin Ya., Nikolay V. Razuvaev, Alexey Yu. Mamychev, Sergey S. Shestopal, and Benedyk V. I. “Signs of State and Their Historical Modifications”. Journal of History Culture and Art Research 7, no. 3 (September 30, 2018): 175-186. Accessed May 3, 2024. http://kutaksam.karabuk.edu.tr/index.php/ilk/article/view/1746.