M. C. Dreher Mansur and Meier-Brook, C., ?Morphology of Eupera Bourguignat, 1854 and Byssanodonta Orbigny, 1846 with contributions to the phylogenetic systematics of Sphaeriidae and Corbiculidae (Bivalvia: Veneroida)?, Archiv für Molluskenkunde, vol. 128, pp. 1-59, 2000.