[1]
“GRAFFITO № 25 FROM ST. SOPHIA CATHEDRAL IN KIEV: WHAT DO WE KNOW ABOUT THE PURCHASE OF ‘BOYAN`S LAND’?”, Вестник.История, vol. 48, no. 1, pp. 130–145, Nov. 2020, Accessed: Sep. 12, 2026. [Online]. Available: https://press.psu.ru/index.php/history/article/view/3144