Adam Petrusek, Anders Hobæk, Jens Petter Nilssen, Morten Skage, Martin Černý, Nora Brede, Klaus Schwenk. A taxonomic reappraisal of the European Daphnia longispina complex (Crustacea, Cladocera, Anomopoda). „Zoologica Scripta”. 37 (5), s. 507–519, wrzesień 2008. Norwegian Academy of Science and Letters. DOI: 10.1111/j.1463-6409.2008.00336.x. (ang.).