Мезенцев, Костянтин, and Євген Яковенко. “Peculiarities of the Dynamics of Migration Processes in Sumy Region”. Human Geography Journal 13, no. 2 (November 18, 2016): 81-85. Accessed November 22, 2024. https://periodicals.karazin.ua/socecongeo/article/view/6673.