L. Forró szerk.: Miscellanea Zoologica Hungarica 7. 1992 (Budapest, 1992)

Nesemann, H.: Species composition and zoogeography of the invertebrate fauna at the lower reaches of the Lajta River

Figs 11-15. Theodoxus danubialis, Figs 11-12 = Typical form, Lajta at Gattendorf, Fig. 13 = Black form, Lajta at Nickelsdorf, Fig. 14 = Operculum, Fig. 15 = Yellow form without stripes, Lajta-megyei-csatorna Figs 16-17. Theodoxus transversialis, Lajta at Rohrau, subfossil