@misc{Birula_A._(1864–1937)_Beiträge_1893,
 author={Birula, A. (1864–1937)},
 copyright={Public Domain},
 address={[Petropoli]},
 howpublished={online},
 year={1893},
 publisher={[Typis V. Besobrasovi & Comp.]},
 title={Beiträge zur Acariden-Fauna Russlands. 1. Rhyncholophus (Macropus) plumifer n. sp.},
 type={Text},
 URL={http://www.rcin.org.pl/Content/68079/PDF/s84.pdf},
 keywords={Mites (Acari) - description of specimens, Mites (Acari) - research expedition - Little Caucasus},
}