@misc{Wiktor_Andrzej_Gastropoda_2002,
 author={Wiktor, Andrzej and Riedel, Adolf (1930–2010)},
 copyright={Creative Commons Attribution BY 3.0 PL license},
 address={Kraków},
 howpublished={online},
 year={2002},
 publisher={Institute of Nature Conservation of the Polish Academy of Sciences},
 language={pol},
 type={Text},
 title={Gastropoda terrestria Terrestrial gastropods},
 URL={http://www.rcin.org.pl/Content/115551/PDF/KR038_97321_r2002_CzLZ-Wiktor-27-33.pdf},
 keywords={red data list, threatened species, molluscs, gastropods, terrestrial gastropods, Mollusca, Gastropoda terrestria},
}