NIKOLOV, N. The intelligent school: the heart of the smart city. Annual of Natural Sciences Department, [S. l.], v. 10, p. 12–24, 2025. DOI: 10.33919/ansd.25.10.2. Disponível em: https://ojs.nbu.bg/index.php/ANSD/article/view/1403. Acesso em: 2 jun. 2026.