@article{revell2011,
  title={phytools: an R package for phylogenetic comparative biology (and other things)},
  author={Liam J. Revell},
  year={2011},
  journal={Methods in Ecology and Evolution},
  doi={10.1111/j.2041-210x.2011.00169.x},
  url={https://doi.org/10.1111/j.2041-210x.2011.00169.x}
}