KHRISANFOV, Valentin; TURYGINA, Natalia. The Russian Diaspora in Bulgaria: Issues of Migration Registration in the Interwar Period. Quaestio Rossica, [S. l.], v. 8, n. 1, p. 283–294, 2020. DOI: 10.15826/qr.2020.1.462. Disponível em: https://qr.urfu.ru/ojs/index.php/qr/article/view/qr.462. Acesso em: 22 jul. 2024.