Hoffman, L., Haulofu, M., Johnson, M.J. and Zettler, M.L. 2026. Species of the genus Gibberula Swainson, 1840 (Gastropoda: Cystiscidae) from Namibia. European Journal of Taxonomy. 1111, 1 (Oct. 2026), 1–18. DOI:https://doi.org/10.5852/ejt.2026.1111.3344.