Gittenberger, E. (1993). The southeast European Hypnophila species (Mollusca: Gastropoda Pulmonata: Cochlicopidae). Zoologische Mededelingen. 67 (37): 517-524. Leiden.
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Gittenberger, E.
1993
The southeast European Hypnophila species (Mollusca: Gastropoda Pulmonata: Cochlicopidae)