@misc{Tyszkowski_Michał_The_1992,
 author={Tyszkowski, Michał},
 volume={48},
 number={3},
 copyright={Creative Commons Attribution BY 3.0 PL license},
 address={Kraków},
 journal={Let's protect Our Indigenous Nature},
 howpublished={online},
 year={1992},
 publisher={Research Centre for the Protection of Nature and Natural Resources of the Polish Academy of Sciences},
 language={pol},
 type={Text},
 title={The fern Osmunda regalis in the region of Opole},
 URL={http://www.rcin.org.pl/Content/147823/PDF/KR038_171163_r1992-t48-no3_ChPO-Tyszkowski-98-101.pdf},
 keywords={royal fern, Osmunda regalis},
}