CHALLENGES TO THE DEVELOPMENT OF THE MARINE LITTER MONITORING SYSTEM IN BULGARIA. ENVIRONMENT. TECHNOLOGY. RESOURCES. Proceedings of the International Scientific and Practical Conference, [S. l.], v. 1, p. 378–382, 2024. DOI: 10.17770/etr2024vol1.7975. Disponível em: https://archive-journals.rtu.lv/etr/article/view/4713.. Acesso em: 11 mar. 2026.