@misc{indiciae9eb95f1526bb,
  title = {Enumeration of structure-sensitive graphical subsets: Theory.},
  author = {R E Merrifield and H E Simmons},
  year = {1981},
  doi = {10.1073/pnas.78.2.692},
  url = {https://pubmed.ncbi.nlm.nih.gov/16592974/},
  note = {Source identifier: 16592974}
}