van der Sluijs, I., Van Dooren, T. J. M., Seehausen, O., & van Alphen, J. J. M. (2008). A test of fitness consequences of hybridization in sibling species of Lake Victoria cichlid fish. Journal of Evolutionary Biology, 21(2), 480-491. https://doi.org/10.1111/j.1420-9101.2007.01495.x