(en) Greve C., Hutterer R., Groh K., Haase M. & Misof B. (2010). "Evolutionary diversification of the genus Theba (Gastropoda: Helicidae) in space and time: A land snail conquering islands and continents". Molecular Phylogenetics and Evolution57(2): 572-584. DOI10.1016/j.ympev.2010.08.021.