Toneva, Daniela, and Desislava Dimitrova. “SOME ASPECTS OF THE WATER CRISIS IN BULGARIA”. ENVIRONMENT. TECHNOLOGIES. RESOURCES. Proceedings of the International Scientific and Practical Conference 1 (June 22, 2024): 373–377. Accessed June 30, 2024. https://journals.rta.lv/index.php/ETR/article/view/7972.