Vilinbakhov [Вилинбахов] V.B. [В.Б.]. “Some Demographic Problems in the History of Rus”. Studia Historiae Oeconomicae 6 (October 17, 1972): 21–36. Accessed October 20, 2026. https://pressto.amu.edu.pl/index.php/sho/article/view/57502.