Lymnaea (Corvusiana section Kuesterilymnaea)
The systematic position of Lymnaea vulnerata (Kuester, 1862) and L. occulta (Jackiewicz, 1959) (Mollusca: Gastropoda: Lymnaeidae). Zoosystematica Rossica, 12(1), 30 December 2003: 23-27. 23 [Zoological Record Volume 140]