@article{Kozlova2018biological,
author={Kozlova, K.S. and Shkorko, M.Y. and Zhurovich, E.A. and Alekseev, G.V.},
title={Biological monitoring of the quality of water  in St. Petersburg},
journal={Journal of Natural Sciences Research},
publisher={INFRA-M Academic Publishing LLC.},
year={2018},
pages={29-32},
volume={3},
issue={4},
}