English
Reference
Lothar A. Beck (1992): Symmetromphalus hageni sp.n., a new neomphalid gastropod (Prosobranchia: Neomphalidae) from hydrothermal vents at the Manus Back-Arc Basin (Bismarck Sea, Papua New Guinea). – Annalen des Naturhistorischen Museums in Wien – 93B: 243 - 257.
