@misc{indiciae6f03fc2a4d6a,
  title = {Orientation in operator algebras.},
  author = {E M Alfsen and F W Shultz},
  year = {1998},
  doi = {10.1073/pnas.95.12.6596},
  url = {https://pubmed.ncbi.nlm.nih.gov/9618457/},
  note = {Source identifier: 9618457}
}