^Fery, Hans, and Oemer Koeksal Erman. "Five new species of the longulus-group of Hydroporus Clairville, 1806 from north-eastern Turkey (Coleoptera: Dytiscidae)." Zootaxa 2033 (2009): 1–12.
Topkara, Esat Tarık, and M. Ruşen Ustaoğlu. "Investigations on the Aquatic Coleoptera (Classis: Insecta) Fauna of some Mountain Lakes in the Eastern Black Sea Range (Turkey)."
