SIMEONOVA, Anna; KRALEV, Petar. Onshore ballast water management systems: National perspectives. ANNUAL JOURNAL OF TECHNICAL UNIVERSITY OF VARNA, BULGARIA, [S. l.], v. 7, n. 1, p. 1–11, 2023. DOI: 10.29114/ajtuv.vol7.iss1.288. Disponível em: https://aj.tu-varna.bg/index.php/ajtuv/article/view/288. Acesso em: 2 oct. 2025.