@misc{Sack_Pius_(1865–1946)_Eristalis_1935,
 author={Sack, Pius (1865–1946)},
 copyright={Public Domain},
 address={[Hamburg]},
 journal={Publications of famous biologists - a collection of prints},
 howpublished={online},
 year={1935},
 publisher={[unknown]},
 language={ger},
 title={Eristalis germanica eine neue deutsche Syrphide},
 type={Text},
 URL={http://rcin.org.pl/Content/118032/PDF/s976.pdf},
 keywords={Insects (Eristalis germanica, Syrphidae) - new German species - Museum in Hamburg},
}