@misc{Profus_Piotr_Satelite_1994, author={Profus, Piotr}, volume={50}, number={1}, copyright={Creative Commons Attribution BY 3.0 PL license}, address={Kraków}, journal={Let's protect Our Indigenous Nature}, howpublished={online}, year={1994}, publisher={Institute of Nature Conservation of the Polish Academy of Sciences}, language={pol}, type={Text}, title={Satelite tracking - the newest technic in research of migrating animals}, URL={http://rcin.org.pl/Content/105121/PDF/KR038_105361_r1994-t50-no1_ChPO-Profus-89-94.pdf}, keywords={bird migration}, }