Willan, R. C. (1987). Phylogenetic systematics of the Notaspidea (Opistobranchia) with reappraisal of families and genera. American Malacological Bulletin. 5 (2): 215-241.
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Willan, R. C.
1987
Phylogenetic systematics of the Notaspidea (Opistobranchia) with reappraisal of families and genera