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Larsson, K.; Ahmadzadeh, A.; Jondelius, U. (2008). "DNA taxonomy of Swedish Catenulida (Platyhelminthes) and a phylogenetic framework for catenulid classification". Organisms Diversity & Evolution. 8 (5): 399–412. doi:10.1016/j.ode.2008.09.003. ISSN1439-6092.