Stepanova, Liliya. “The Quantitative Analysis of Materials from the General Land Survey of the Russian Empire: The ‘Bear’ Angle”. Quaestio Rossica 9, no. 3 (September 29, 2021): 1013–1024. Accessed April 25, 2024. https://qr.urfu.ru/ojs/index.php/qr/article/view/qr.624.