MANAKOV, A. G.; MIKHAYLOVA, A. A. Changes in the Territorial and Administrative Division of Northwest Russia over the Soviet Period. International Journal of Economics and Financial Issues, [S. l.], v. 5, n. 2S, p. 37–40, 2015. Disponível em: https://www.econjournals.com/index.php/ijefi/article/view/1594. Acesso em: 25 may. 2022.