@misc{indiciae9860194d7ccd,
  title = {Flat-space singletons.},
  author = {C Fronsdal},
  year = {1987},
  doi = {10.1103/physrevd.35.1262},
  url = {https://pubmed.ncbi.nlm.nih.gov/9957786/},
  note = {Source identifier: 9957786}
}