@misc{indiciae54bada59919e,
  title = {CONFORMAL GEOMETRY AND ELEMENTARY PARTICLES.},
  author = {R Ingraham},
  year = {1954},
  doi = {10.1073/pnas.40.4.237},
  url = {https://pubmed.ncbi.nlm.nih.gov/16589464/},
  note = {Source identifier: 16589464}
}