L. Forró - É. Murai szerk.: Miscellanea Zoologica Hungarica 6. 1991 (Budapest, 1991)

Nesemann, H.: Zoogeography and composition of leech fauna of Danubian lowland rivers in the Kisalföld compared with some molluscs (Hirudinea, Gastropoda)

Figs 16-17. Distribution of some Glossiphoniidae in rivers of the Kisalföld Fig. 18. The most important plains, barriers (mountains) and pathways (narrow valleys) for aquatic organisms along the middle reach of the river Danube Fig. 19. Zoogeographical division of the Potamon biocoenosis, according to SOÓS (1934) (For explanation of the numbers see text)