MolluscaBase taxon details
basis of record
Bank, R. A.; Neubert, E. (2017). Checklist of the land and freshwater Gastropoda of Europe. Last update: July 16th, 2017. [details]
additional source
Riedel, A. (1967). Über Oxychilus oppressus (Fischer et Studer in Shuttleworth, 1877) (Gastropoda, Zonitidae). Bulletin de l'Académie Polonaise des Sciences, 15 (2): 85-88. [details] Available for editors [request]