@article{zou_susko_field_roger_2012, title={Fitting nonstationary general-time-reversible models to obtain edge-lengths and frequencies for the barry-hartigan model}, volume={61}, number={6}, journal={Systematic Biology}, author={Zou, L. W. and Susko, E. and Field, C. and Roger, A. J.}, year={2012}, pages={927–940} }