Zilch, A. (1959-1960). Gastropoda. Teil 2. Euthyneura. In: Schindewolf, O. H. (Ed.), Handbuch der Paläozoologie, Band 6. Borntraeger, Berlin. Lfg. 1: pp. 1-200 (17 July 1959); Lfg. 2: pp. 201-400 (25 November 1959); Lfg. 3: pp. 401-600 (30 March 1960); Lfg. 4: pp. 601-834, I-XII (15 August 1960).