@misc{indiciae0ad83223430f,
  title = {Minimally colored trees.},
  author = {I Rinsma and M Hendy and D Penny},
  year = {1990},
  doi = {10.1016/0025-5564(90)90124-h},
  url = {https://pubmed.ncbi.nlm.nih.gov/2134502/},
  note = {Source identifier: 2134502}
}