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 (Dec. 2022), 8–13. DOI:https://doi.org/10.24852/2587-6112.2022.6.8.13.