@misc{Szymański_Paweł_Nesting,
 author={Szymański, Paweł},
 howpublished={online},
 publisher={Zielona Góra: University of Zielona Góra, Faculty of Biological Sciences},
 language={eng},
 title={Nesting of tree sparrow "Passer montanus" in the nest of common buzzard "Buteo buteo"},
 type={artykuł},
 keywords={wróblowe, ornitologia},
}