Drozdenko, Tatiana, Sergei Mikhalap, Larisa Nikolskaya, and Anna Chernova. “ASSESSMENT OF ECOLOGICAL STATE OF THE VELIKAYA RIVER DELTA BASED ON HYDROCHEMICAL INDICATORS AND STRUCTURE OF PHYTOPLANKTON”. ENVIRONMENT. TECHNOLOGIES. RESOURCES. Proceedings of the International Scientific and Practical Conference 1 (June 15, 2017): 82–88. Accessed November 24, 2024. https://journals.ru.lv/index.php/ETR/article/view/2650.