@misc{indiciaece97494911a4,
  title = {Dirac operators coupled to vector potentials.},
  author = {M F Atiyah and I M Singer},
  year = {1984},
  doi = {10.1073/pnas.81.8.2597},
  url = {https://pubmed.ncbi.nlm.nih.gov/16593460/},
  note = {Source identifier: 16593460}
}