H.  Hoffmann, ?Anatomische und systematische Untersuchungen uber die Parmarioninen (Gastr. Pulm.).?, Zool. Jahrb. (Syst.), vol. 74, 1940.

A. A.  Schilekyo, ?Treatise on recent terrestrial pulmonate molluscs?, 9, vol. Ruthenica, 2002.

A. A.  Schilekyo, ?Treatise on recent terrestrial pulmonate molluscs?, Ruthenica, vol. 10, 2003.

A. A.  Schilekyo, ?Treatise on recent terrestrial pulmonate molluscs?, Ruthenica, vol. 11, 2003.