Population genomic analysis reveals a rich speciation and demographic history of orang-utans (Pongo pygmaeus and Pongo abelii).

Ma X, Kelley JL, Eilertson K, et al. "Population genomic analysis reveals a rich speciation and demographic history of orang-utans (Pongo pygmaeus and Pongo abelii)." PLoS One. 2013;8(10):e77175.