@ARTICLE{Kopacz_Marek_The_2011,
 author={Kopacz, Marek and Twardy, Stanisław},
 number={No 15},
 journal={Journal of Water and Land Development},
 howpublished={online},
 year={2011},
 publisher={Polish Academy of Sciences; Institute of Technology and Life Sciences - National Research Institute},
 title={The land use changes in agricultural areas between 1980 and 2005 with particular emphasis on permanent grasslands - an example of the upper Raba River basin Zmiany użytkowania obszarów rolniczych w latach 1980-2005 ze szczególnym uwzględnieniem TUZ na przykładzie zlewni górnej Raby},
 URL={http://ochroma.man.poznan.pl/Content/89917/mainfile.pdf},
}