Yule-generated trees constrained by node imbalance.

@article{Disanto2013YulegeneratedTC,
  title={Yule-generated trees constrained by node imbalance.},
  author={Filippo Disanto and Anna Schlizio and Thomas Wiehe},
  journal={Mathematical biosciences},
  year={2013},
  volume={246 1},
  pages={
          139-47
        }
}

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