Bergelson, Mira, Andrej Kibrik, and Marina Raskladkina. “The Language of a Lost Russian Region in the Historical Context of Russia’s Eastward Expansion”. Quaestio Rossica 8, no. 3 (September 2, 2020): 916–936. Accessed November 28, 2021. https://qr.urfu.ru/ojs/index.php/qr/article/view/qr.504.