@misc{indiciae12949ef60647,
  title = {Intrinsic Area.},
  author = {H Busemann},
  year = {1946},
  doi = {10.1073/pnas.32.1.5},
  url = {https://pubmed.ncbi.nlm.nih.gov/16578185/},
  note = {Source identifier: 16578185}
}