Reference

Oleg G. Brekhov, Helena V. Shaverdo, Elena V. Ilyina, Maksim I. Shapovalov (2013): Water beetles of Dagestan, Russia (Coleoptera: Noteridae, Dytiscidae, Haliplidae, Gyrinidae, Hydrophilidae, Spercheidae). – Koleopterologische Rundschau – 83_2013: 35 - 52.