7.
Cameron R. A. D., Colville B., Falkner G., Holyoak A., Hornung E., Killeen I. J., Moorkens E. A., Pokryszko B. M., Proschwitz T., Tattersfield P., Valovirta I. 2003. Species accounts for snails of genus Vertigo listed in Annex II of the Habitat Directive: V. angustior, V. genesii, V. geyeri and V. moulinsiana (Gastropoda: Pulmonata: Vertiginidae). Heldia 5: 151–170.