@misc{_Acta_2007,
 volume={42},
 editor={Museum and Institute of Zoology, Polish Academy of Sciences},
 number={2},
 copyright={Rights Reserved - Free Access},
 journal={Acta Ornithologica},
 address={Warsaw},
 howpublished={online},
 year={2007},
 publisher={Museum and Institute of Zoology, Polish Academy of Sciences},
 publisher={Natura Optima Dux Foundation},
 language={eng},
 type={Text},
 title={Acta Ornithologica, Winter 2007 - Vol. 42 No 2},
 keywords={Poland, birds, periodicals, ornithology},
}