ABUKHBA, Inal. Near-border and Cross-border Cooperation between Municipalities. Gosudarstvennaya Sluzhba, [S. l.], v. 13, n. 4, p. 32–35, 2011. Disponível em: https://gosudarstvennaya-sluzhba.owebs.ru/article/view/21341. Acesso em: 9 nov. 2026.