Reference

M.-C. Mansur -Dreher, C. Meier-Brook (2000): Morphology of Eupera Bourguignat 1854, and Byssanodonta Orbigny 1846 with contributions to the phylogenetic systematics of Sphaeriidae and Corbiculidae (Bivalvia: Veneroida) – Arch. Molluskenk. – 128(1-2: 1 - 59.