The genetic basis of postzygotic reproductive isolation between Drosophila santomea and D. yakuba due to hybrid male sterility.
Moehring AJ, Llopart A, Elwyn S, Coyne JA, Mackay TF. The genetic basis of postzygotic reproductive isolation between Drosophila santomea and D. yakuba due to hybrid male sterility. Genetics. 2006 May; 173(1):225-33.