Nordsieck, H. (2013). Fossil Clausiliidae from Ceresole d'Alba (Piedmont; Middle Pliocene), with remarks on Triptychia (Filholiidae) and the Helicoidea from the same site. Archiv für Molluskenkunde. 142(1): 167-180.
Fossil Clausiliidae from Ceresole d'Alba (Piedmont; Middle Pliocene), with remarks on <i>Triptychia</i> (Filholiidae) and the Helicoidea from the same site