TERNOVAYA, Lyudmila. Source - the source - History. Gosudarstvennaya Sluzhba, [S. l.], v. 14, n. 3, p. 91–95, 2012. Disponível em: https://gosudarstvennaya-sluzhba.owebs.ru/article/view/21549. Acesso em: 9 nov. 2026.