@misc{Martyka_Rafał_Waterfowl_2002,
 author={Martyka, Rafał and Skórka, Piotr},
 volume={58},
 number={5},
 copyright={Creative Commons Attribution BY 3.0 PL license},
 journal={Let's protect Our Indigenous Nature},
 address={Kraków},
 howpublished={online},
 year={2002},
 publisher={Institute of Nature Conservation of the Polish Academy of Sciences},
 language={pol},
 title={Waterfowl of the sedimentation basins of the Nitrogen Works in Tarnów},
 type={Text},
 URL={http://www.rcin.org.pl/Content/141925/PDF/KR038_167935_r2002-t58-no5_ChPO-Martyka-23-43.pdf},
}