@article{Usov_2008 author = {A. Ye. Usov and S. A. Afanasyev and L. V. Guleykova and T. N. Sereda and A. I. Tsybulskiy}, title = {Ecological Risks Conditioned by the Spill of Sewage of the Town of Chernigov into Water Courses}, journal = {Hydrobiological Journal}, issn = {0018-8166}, year = {2008}, volume = {44}, number = {3}, pages = {43--56} }