@misc{Beutel_Rolf_Head_2001,
 author={Beutel, Rolf and Anton, Eric and Bernhard, Detlev},
 volume={51},
 editor={Polska Akademia Nauk. Muzeum i Instytut Zoologii},
 number={4},
 copyright={Rights Reserved - Restricted Access},
 journal={Annales Zoologici},
 address={Warszawa},
 howpublished={online},
 year={2001},
 publisher={Muzeum i Instytut Zoologii PAN},
 language={eng},
 title={Head structures of adults of Spercheus (Coleoptera: Spercheidae): their function and possible significance to Staphyliniform phylogeny},
 type={Text},
 keywords={Hydrophiloidea, phylogeny, head morphology, Spercheus cerisyi, filter feeding},
}