@article{posada1998,
  title={MODELTEST: testing the model of DNA substitution.},
  author={David Posada and Keith A. Crandall},
  year={1998},
  journal={Bioinformatics},
  doi={10.1093/bioinformatics/14.9.817},
  url={https://doi.org/10.1093/bioinformatics/14.9.817}
}