@misc{indiciae8ba212a73baf,
  title = {Quantitative changes in the frog muscle spindle with passive stretch.},
  author = {U L Karlsson and W M Hooker and E G Bendeich},
  year = {1971},
  doi = {10.1016/s0022-5320(71)90028-1},
  url = {https://pubmed.ncbi.nlm.nih.gov/4255768/},
  note = {Source identifier: 4255768}
}