@misc{indiciae3bf36bad69ff,
  title = {Time perception for helicopter vibration and noise patterns.},
  author = {G R Hawkes and R W Worsham},
  year = {1970},
  doi = {10.1080/00223980.1970.9916822},
  url = {https://pubmed.ncbi.nlm.nih.gov/5459675/},
  note = {Source identifier: 5459675}
}