Vybornov, A. A., and V. V. Stavitsky. ā€œ 632 Pā€. Arkheologiia Evraziiskikh Stepei (Archaeology of the Eurasian Steppes), no. 1, Feb. 2021, pp. 324-8, doi:10.24852/2587-6112.2021.1.324.328.