@misc{_Acta_1998,
 volume={33},
 editor={Polska Akademia Nauk. Muzeum i Instytut Zoologii},
 number={3-4},
 journal={Acta Ornithologica},
 address={Warszawa},
 howpublished={online},
 year={1998},
 publisher={Muzeum i Instytut Zoologii PAN},
 language={pol},
 language={eng},
 language={rus},
 type={Text},
 title={Acta Ornithologica, vol. 33 no 3-4 (1998)},
 keywords={ornithology, birds, Poland, periodicals},
}