@misc{indiciaefafd9eb58aa7,
  title = {Relic cosmological vector fields and inflationary gravitational waves},
  author = {Tishue, Avery J. and Caldwell, Robert R.},
  year = {2021},
  doi = {10.1103/physrevd.104.063531},
  url = {https://www.osti.gov/biblio/1851370},
  note = {Source identifier: 1851370}
}