@misc{indiciae258421724bbf,
  title = {Respiratory variability in R-R interval during sinusoidal exercise.},
  author = {R Sone and F Yamazaki and N Fujii and Y Fukuoka and H Ikegami},
  year = {1997},
  doi = {10.1007/s004210050124},
  url = {https://pubmed.ncbi.nlm.nih.gov/9007456/},
  note = {Source identifier: 9007456}
}