@misc{Wołek_Jerzy_(1942–2012)_Species_1997,
 author={Wołek, Jerzy (1942–2012)},
 copyright={Creative Commons Attribution BY 3.0 PL license},
 address={Kraków},
 journal={Fragmenta Floristica et Geobotanica. Supplementum},
 howpublished={online},
 year={1997},
 publisher={W. Szafer Institute of Botany. Polish Academy of Sciences},
 language={eng},
 title={Species co-occurrence patterns in pleustonic plant communities (class Lemnetea) : are there assembly rules governing pleustonic community assembly ?},
 type={Text},
}