Sluys, Ronald (September 2022). "Biogeography and diversification of the freshwater planarian Crenobia alpina sensu lato (Platyhelminthes, Tricladida): A synthetic review". Zoologischer Anzeiger. 300: 12–26. doi:10.1016/j.jcz.2022.05.010. ISSN0044-5231.
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Sluys, Ronald (September 2022). "Biogeography and diversification of the freshwater planarian Crenobia alpina sensu lato (Platyhelminthes, Tricladida): A synthetic review". Zoologischer Anzeiger. 300: 12–26. doi:10.1016/j.jcz.2022.05.010. ISSN0044-5231.