@misc{indiciaee017bc7509d1,
  title = {Physical cosmic strings do not generate closed timelike curves.},
  author = {S Deser and R Jackiw and 't Hooft G},
  year = {1992},
  doi = {10.1103/physrevlett.68.267},
  url = {https://pubmed.ncbi.nlm.nih.gov/10045848/},
  note = {Source identifier: 10045848}
}