@misc{Stebel_Adam_Occurrence_2003,
 author={Stebel, Adam and Drobnik, Jacek},
 volume={59},
 number={6},
 copyright={Creative Commons Attribution BY 3.0 PL license},
 address={Kraków},
 journal={Let's protect Our Indigenous Nature},
 howpublished={online},
 year={2003},
 publisher={Institute of Nature Conservation of the Polish Academy of Sciences},
 language={pol},
 type={Text},
 title={Occurrence of legally protected and threatened pteridophytes in man made habitats in the Silesian Upland},
 URL={http://rcin.org.pl/Content/108182/PDF/KR038_111217_r2003-t59-no6_ChPO-Stebel-14-27.pdf},
 keywords={Silesian Upland, pteridophytes, Pteridophyta},
}