@misc{indiciae38be267a6674,
  title = {Monitoring movement: an electronic event counter.},
  author = {D Rafferty and L Brackenridge and F Bell},
  year = {1992},
  doi = {10.1016/0141-5425(92)90093-z},
  url = {https://pubmed.ncbi.nlm.nih.gov/1405565/},
  note = {Source identifier: 1405565}
}