@misc{indiciae81949a49b2e8,
  title = {Multiple-component heart rate responses conditioned under paced respiration.},
  author = {M W Headrick and F K Graham},
  year = {1969},
  doi = {10.1037/h0026975},
  url = {https://pubmed.ncbi.nlm.nih.gov/5786995/},
  note = {Source identifier: 5786995}
}