@ARTICLE{Nawrocka_Lidia_12._2011, author={Nawrocka, Lidia and Kobos, Justyna}, volume={Vol. 53}, number={Iss. 3}, journal={Oceanologia}, howpublished={online}, year={2011}, publisher={Instytut Oceanologii PAN}, publisher={Komitet BadaƄ Morza PAN}, title={12. The trophic state of the Vistula Lagoon: an assessment based on selected biotic and abiotic parameters according to the Water Framework Directive:}, URL={http://www.journals.pan.pl/Content/99983/mainfile.pdf}, }