@misc{Walankiewicz_Wiesław_How_1997,
 author={Walankiewicz, Wiesław and Czeszczewik, Dorota and Mitrus, Cezary and Szymura, Arkadiusz},
 volume={32},
 editor={Polska Akademia Nauk. Muzeum i Instytut Zoologii},
 number={2},
 copyright={Rights Reserved - Free Access},
 journal={Acta Ornithologica},
 address={Warszawa},
 howpublished={online},
 year={1997},
 publisher={Muzeum i Instytut Zoologii PAN},
 language={eng},
 language={pol},
 title={How the territory mapping technique reflects yearly fluctuations in the collared flycatcher Ficedula albicollis numbers?},
 type={Text},
 URL={http://www.rcin.org.pl/Content/43586/PDF/WA058_60637_P257-T32_Acta-Ornith-Nr-2-9.pdf},
 keywords={Collared Flycatcher, counting, counting changes, Poland, Białowieża National Park, Białowieski National Park, mapping method, hornbeam forest, Old World flycatcher, birds, Ficedula albicollis, Muscicapidae, Aves, 1989-95},
}