Radiation, multiple dispersal and parallelism in the skinks, Chalcides and Sphenops (Squamata: Scincidae), with comments on Scincus and Scincopus and the age of the Sahara Desert.
Carranza S, Arnold EN, Geniez P, Roca J, Mateo JA. Mol Phylogenet Evol. 2008 Mar; 46(3):1071-94. Epub 2007 Dec 5.