BORISOV, Borislav. FUNCTIONS AND MANAGEMENT MATURITY OF REGIONAL ADMINISTRATIONS IN BULGARIA. KNOWLEDGE - International Journal , [S. l.], v. 76, n. 1, p. 23–29, 2026. Disponível em: https://ojs.ikm.mk/index.php/kij/article/view/8280. Acesso em: 5 jun. 2026.