R analyses from
Bonnet, T, Leblois, R, Rousset, F, Crochet, PA (2017). A reassessment of explanations for discordant introgressions of mitochondrial and nuclear genomes. Evolution 71(9): 2140-2158. doi:10.1111/evo.13296.
See also the simulation software used to generate the data https://github.com/timotheenivalis/CodeAllForward.