@inbook{ERMS:SourceID:40420, author = {Schmekel, L. and Portmann, A.}, note = {CLEMAM P1362}, title = {Opisthobranchia des Mittelmeeres. Springer, Berlin, 410 pp.}, url = {https://books.google.com/books?id=RM0E7Onc7F4C}, year = {1982} }