Esu, D., Girotti, O. (2015). Melanopsis wilhelmi n. sp. and Valvata ducati n. sp., two new Pleistocene gastropods from a section of the Stirone River (Emilia, North Italy) (Gastropoda: Melanopsidae, Valvatidae). Archiv für Molluskenkunde. 144 (2), 149-154.
<em>Melanopsis wilhelmi</em> n. sp. and <em>Valvata ducati</em> n. sp., two new Pleistocene gastropods from a section of the Stirone River (Emilia, North Italy) (Gastropoda: Melanopsidae, Valvatidae)