@misc{Rychła_Anna_Materials,
 author={Rychła, Anna and Buczyński, Paweł},
 howpublished={online},
 publisher={Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej},
 language={eng ; pol},
 type={artykuł},
 title={Materials to the knowledge of aquatic beetle fauna (Coleoptera) in mid-western Poland (Lubuskie Province)},
 keywords={diversity, species richness, freshwaters, ponds, rare species, endangered species, protected species, Macroplea appendiculata, Rhantus incognitus},
}