Kalugina , E. M. . “Pre-Mongol Rus Textiles Acсording to Birchbark Letters of the 11th – First Third of the 13th Century”. Arkheologiia Evraziiskikh Stepei (Archaeology of the Eurasian Steppes), no. 1, Mar. 2023, pp. 86-92, doi:10.24852/2587-6112.2023.1.86.92.