Trontelj, Peter. “Glossiphonia Slovaca (Košel 1973) (Hirudinea: Glossiphoniidae) from the Sava River at Čatež: A Leech New to Slovenia, and the Question of Its Taxonomic Identity”. Natura Sloveniae, vol. 2, no. 2, Dec. 2000, pp. 21-27, https://doi.org/10.14720/ns.2.2.21-27.