Woods, P. J., Müller, R., & Seehausen, O. (2009). Intergenomic epistasis causes asynchronous hatch times in whitefish hybrids, but only when parental ecotypes differ. Journal of Evolutionary Biology, 22(11), 2305-2319. https://doi.org/10.1111/j.1420-9101.2009.01846.x