@misc{indiciaeae5064936ef1,
  title = {Cosmic-string loops are straight.},
  author = {WG Unruh and G Hayward and W Israel and D McManus},
  year = {1989},
  doi = {10.1103/physrevlett.62.2897},
  url = {https://pubmed.ncbi.nlm.nih.gov/10040121/},
  note = {Source identifier: 10040121}
}