@misc{Ostański_Mariusz_The_2000,
 author={Ostański, Mariusz and Szlama, Dariusz and Chrul, Zbigniew and Profus, Piotr},
 volume={56},
 number={5},
 copyright={Creative Commons Attribution BY 3.0 PL license},
 address={Kraków},
 journal={Let's protect Our Indigenous Nature},
 howpublished={online},
 year={2000},
 publisher={Institute of Nature Conservation of the Polish Academy of Sciences},
 language={pol},
 type={Text},
 title={The avifauna of the Dzierżno Duże Retention Reservoir in Upper Silesia Part 1. The importance of the reservoir for wintering waterfowl},
 URL={http://rcin.org.pl/Content/207907/PDF/KR038_193910_r2000-t56-no5_ChPO-Ostanski-5-30.pdf},
 keywords={Dzierżno Duże},
}