@misc{indiciaec56c0af6cbef,
  title = {Millisecond-pulsar constraint on cosmic strings.},
  author = {FR Bouchet and DP Bennett},
  year = {1990},
  doi = {10.1103/physrevd.41.720},
  url = {https://pubmed.ncbi.nlm.nih.gov/10012389/},
  note = {Source identifier: 10012389}
}