@misc{indiciae8af43c0a029a,
  title = {Are there echoes of gravitational waves?},
  author = {Guo, Bin and Mathur, Samir D.},
  year = {2022},
  doi = {10.1142/s0218271822420093},
  url = {https://www.osti.gov/biblio/2420136},
  note = {Source identifier: 2420136}
}