Multilocus analysis of introgression between two sympatric sister species of Drosophila: Drosophila yakuba and D. santomea.
Llopart A, Lachaise D, Coyne JA. Multilocus analysis of introgression between two sympatric sister species of Drosophila: Drosophila yakuba and D. santomea. Genetics. 2005 Sep; 171(1):197-210.