@article{measuringtreebalanceusingsymmetrynodesa,
  title = {Measuring tree balance using symmetry nodes -- a new balance index and its extremal properties},
  author = {Sophie J. Kersting and Mareike Fischer},
  year = {2021},
  eprint = {2105.00719},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2105.00719v2},
}