Reference

Miguel Ibanez, Klaus Groh, Elena Cavero, Maria Rosario Alonso (1987): Revision of the genus Hemicycla Swainson 1840 on Tenerife: the group of Hemicycla plicaria (Lamarck 1816) (Mollusca: Helicidae) – Arch. Molluskenk. – 118(1-3: 77 - 103.