Stashenkov, D. A. “NEW DOCUMENTS ON THE BEGINNING OF A.S. BASHKIROV’S SCIENTIFIC AND PEDAGOGICAL ACTIVITY”. Arkheologiia Evraziiskikh Stepei (Archaeology of the Eurasian Steppes), no. 5, Oct. 2021, pp. 153-6, doi:10.24852/2587-6112.2021.5.153.156.