@misc{Sowa_Ryszard_Oligoneuriella_1961,
 author={Sowa, Ryszard},
 volume={Vol. 3},
 number={4},
 copyright={Creative Commons Attribution BY 3.0 PL license},
 journal={Acta Hydrobiologica},
 address={Kraków},
 howpublished={online},
 year={1961},
 publisher={Laboratory of Water Biology of the Polish Academy of Sciences},
 publisher={Państwowe Wydawnictwo Naukowe},
 language={eng},
 title={Oligoneuriella mikulskii n. sp. (Ephemeroptera)},
 type={Text},
 URL={http://www.rcin.org.pl/Content/158646/PDF/KR038_182590_r1961-t3-no4_AH-Sowa-287-294.pdf},
}