Gluszkowski, Michal. 2011. “Vershina – a Polish Village in Siberia. Factors Influencing Language Maintenance under Changing Social, Cultural, Economic and Political Conditions”. Eesti Ja Soome-Ugri Keeleteaduse Ajakiri. Journal of Estonian and Finno-Ugric Linguistics 2 (1). Tartu, Estonia:157-70. https://doi.org/10.12697/jeful.2011.2.1.10.