@misc{indiciae51436b12c3c9,
  title = {ON CANONICAL CONSTRUCTIONS. I.},
  author = {M Gerstenhaber},
  year = {1955},
  doi = {10.1073/pnas.41.4.233},
  url = {https://pubmed.ncbi.nlm.nih.gov/16589654/},
  note = {Source identifier: 16589654}
}