@misc{indiciae857a4795ce1c,
  title = {Matching sequences under deletion-insertion constraints.},
  author = {D Sankoff},
  year = {1972},
  doi = {10.1073/pnas.69.1.4},
  url = {https://pubmed.ncbi.nlm.nih.gov/4500555/},
  note = {Source identifier: 4500555}
}