@misc{_Acta_1999,
 volume={Vol. 41},
 number={Suppl. 6},
 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={Acta Hydrobiologica Vol. 41 (1999) Suppl. 6},
}