[1]
Gubaidullin, A.M. and Khamzin, R.N. 2020. THE FORTRESS STRUCTURES OF SVIYAZHSK. Arkheologiia Evraziiskikh Stepei (Archaeology of the Eurasian Steppes). 6 (Dec. 2020), 410–417. DOI:https://doi.org/10.24852/2587-6112.2020.6.410.417.