Literature
- Seaward, D.R. 1990. Distribution of the marine molluscs of north west Europe. Nature Conservancy Council.
- Thompson, T.E. 1988. Molluscs: Benthic Opisthobranchs (Mollusca: Gastropoda). Synopses of the British fauna (NS), 8: 1-356.
- Thompson, T.E. & G.H. Brown, 1976/1984. Biology of Opisthobranch Molluscs, volume I and II. Ray Society. London. .