@misc{Kownacki_Andrzej_Checklist_1999,
 author={Kownacki, Andrzej},
 volume={Vol. 41},
 number={1},
 copyright={Creative Commons Attribution BY 3.0 PL license},
 address={Kraków},
 journal={Acta Hydrobiologica},
 howpublished={online},
 year={1999},
 publisher={Karol Starmach Institute of Freshwater Biology of the Polish Academy of Sciences},
 language={eng},
 type={Text},
 title={Checklist of macroinvertebrates in the River Vistula},
 URL={http://www.rcin.org.pl/Content/207875/PDF/KR038_142479_r1999-t41-no1_AH-Kownacki-45-75.pdf},
}