@misc{indiciaeb1f02128d771,
  title = {Gravitational phase operator and cosmic strings.},
  author = {J Anandan},
  year = {1996},
  doi = {10.1103/physrevd.53.779},
  url = {https://pubmed.ncbi.nlm.nih.gov/10020059/},
  note = {Source identifier: 10020059}
}