“STUDY OF SUSTAINABILITY AND CONFORMITY OF FUNCTIONING OF LOTIC ECOSYSTEMS ON THE EXAMPLE OF THE DZKNAGET RIVER (ARMENIA)”, Proc. YSU B: Chem. Biol. Sci., vol. 51, no. 3 (244), pp. 186–192, Nov. 2017, doi: 10.46991/PYSUB.2017.51.3.186.