@misc{indiciae278274315a0c,
  title = {Numbering binary trees with labeled terminal vertices.},
  author = {F J Rohlf},
  year = {1983},
  doi = {10.1007/bf02459385},
  url = {https://pubmed.ncbi.nlm.nih.gov/6850159/},
  note = {Source identifier: 6850159}
}