V. Filipova, Margarita. “DETERMINATION OF INTEGRATED ENVIRONMENTAL INDICATORS OF THE IMPACT OF POLLUTANTS INTO WATER BODIES”. JOURNAL SCIENTIFIC AND APPLIED RESEARCH 2, no. 1 (March 4, 2023): 94–100. Accessed November 7, 2024. https://jsar.ftn.shu.bg/index.php/jsar/article/view/49.