PREREQUISITES FOR THE ESTABLISHMENT OF THE BALTIC-BLACK SEA UNION. ENVIRONMENT. TECHNOLOGY. RESOURCES. Proceedings of the International Scientific and Practical Conference, [S. l.], v. 1, p. 111–115, 2024. DOI: 10.17770/etr2024vol1.7962. Disponível em: https://archive-journals.rtu.lv/etr/article/view/4740.. Acesso em: 11 mar. 2026.