E. J.  de Vries, ?Further contributions to the taxonomy and biogeography of the subgenus Dugesia (Plathyhelminthes: Tricladida: Paludicola) in the Mediterranean region and the Middle East?, Israel Journal of Zoology, vol. 35, pp. 109-136, 1988.

R.  Sluys, Kawakatsu, M., and Winsor, L., ?The genus Dugesia in Australia, with its phylogenetic analysis and historical biogeography (Platyhelminthes, Tricladida, Dugesiidae)?, Zoologica Scripta, vol. 27, pp. 273-289, 1998.