@misc{Radwan_Jacek_Are_1993,
 author={Radwan, Jacek},
 volume={27},
 editor={Polska Akademia Nauk. Muzeum i Instytut Zoologii},
 number={2},
 copyright={Creative Commons Attribution BY 3.0 PL license},
 address={Warszawa},
 journal={Acta Ornithologica},
 howpublished={online},
 year={1993},
 publisher={Muzeum i Instytut Zoologii PAN},
 language={eng},
 language={pol},
 type={Text},
 title={Are dull birds still dull in UV?},
 URL={http://rcin.org.pl/miiz/Content/42429/PDF/WA058_59204_P257-T27_Acta-Ornith-Nr-2-3.pdf},
 keywords={passerine birds, perching birds, Passerines, Passeriformes, color, birds, ultraviolet, Aves},
}