@misc{indiciae76e3aca9845f,
  title = {Adrian replies:},
  author = {FJ Adrian},
  year = {1989},
  doi = {10.1103/physrevlett.63.690},
  url = {https://pubmed.ncbi.nlm.nih.gov/10041148/},
  note = {Source identifier: 10041148}
}