Work found, with species-group names introduced therein:
Muniain, C. and J. Ortea. 1997. First record of a Sacoglossan (=Ascoglossan, Opisthobranchia) from Patagonia (Argentina): description of a new species of genus Elysia Risso, 1818. Veliger 40 29-37. [Stated date: 02 Jan 1997.] Elysia patagonica