@ARTICLE{Grzywna_Antoni_Land_2017,
 author={Grzywna, Antoni and Sender, Joanna},
 number={No 33},
 journal={Journal of Water and Land Development},
 howpublished={online},
 year={2017},
 publisher={Polish Academy of Sciences; Institute of Technology and Life Sciences - National Research Institute},
 title={Land cover changes in catchment areas of lakes situated in headwaters of the Tyśmienica River},
 URL={http://ochroma.man.poznan.pl/Content/101870/PDF-MASTER/Grzywna%20Sender.pdf},
 keywords={lake basin, land use, topographic maps, Tyśmienica River},
}