H. D. Jones, B. L. Webster, D. T. J. Littlewood, and J. C. Mcdonald, “Molecular and morphological evidence for two new species of terrestrial planarians of the genus Microplana (Platyhelminthes; Turbellaria; Tricladida; Terricola) from Europe”, Zootaxa, vol. 1945, no. 1, pp. 1–38, Nov. 2008.