M. Özbek, “Gammarus elifedae sp. nov., description of a new amphipod (Amphipoda: Gammaridae) species from Sarpunalınca Cave (Kastamonu, Türkiye), with an updated key for the Turkish freshwater Gammarus species”, Zootaxa, vol. 5757, no. 1, pp. 39–52, Feb. 2026.