Zaytsev, I. V. (2017) “KHUDAIKUL’S (PETER’S) TOMBSTONE IN THE MOSCOW KREMLIN”, Arkheologiia Evraziiskikh Stepei (Archaeology of the Eurasian Steppes), (6), pp. 196–199. Available at: https://www.evrazstep.ru/index.php/aes/article/view/293 (Accessed: 7 November 2026).