Bugarchev , A. I. . and Stepanov , O. V. (2022) “About the Bulgarian Coins of Mengu-Timur with the Title ‘An-Nasir Li-Din Allah’ (1266–1272)”, Arkheologiia Evraziiskikh Stepei (Archaeology of the Eurasian Steppes), (6), pp. 8–13. doi: 10.24852/2587-6112.2022.6.8.13.