Kuklina , A.A. 2022. Differences Between Early and Late Golden Horde Ceramics from Bolgar Settlement. Arkheologiia Evraziiskikh Stepei (Archaeology of the Eurasian Steppes). 3 (Jun. 2022), 163–168. DOI:https://doi.org/10.24852/2587-6112.2022.3.163.168.