@misc{indiciaec44ba2426868,
  title = {Plasma echo and spin echo holophones.},
  author = {C J Watson},
  year = {1971},
  doi = {10.1038/229028a0},
  url = {https://pubmed.ncbi.nlm.nih.gov/16059056/},
  note = {Source identifier: 16059056}
}