Sargis, E. J., Campbell, K. K. & Olson, L. E.(2014): Taxonomic boundaries and craniometric variation in the treeshrews (Scandentia, Tupaiidae) from the Palawan faunal region.
Barth, D., Bernhard, D., Fritzsch, G. & U. Fritz (2004): The freshwater turtle genus Mauremys (Testudines, Geoemydidae) - a textbook example of an east-west disjunction or a taxonomic misconcept?