@article{Urban_Danuta_Characteristics_2013,
 author={Urban, Danuta},
 volume={Vol X},
 howpublished={online},
 year={2013},
 publisher={Oddział PAN w Lublinie},
 title={Characteristics of the locality of Hammarbya paludosa (L.) O. Kuntze on the Łęczna-Włodawa Plain (West Polesie)},
}