@misc{indiciae7cd77e2ed32f,
  title = {Space-time as a causal set.},
  author = {L Bombelli and J Lee and D Meyer and RD Sorkin},
  year = {1987},
  doi = {10.1103/physrevlett.59.521},
  url = {https://pubmed.ncbi.nlm.nih.gov/10035795/},
  note = {Source identifier: 10035795}
}