@misc{indiciae074a0dc6a7ee,
  title = {Threshold pressure training, breathing pattern, and exercise performance in chronic airflow obstruction.},
  author = {M G Flynn and C E Barter and J C Nosworthy and J J Pretto and P D Rochford and R J Pierce},
  year = {1989},
  doi = {10.1378/chest.95.3.535},
  url = {https://pubmed.ncbi.nlm.nih.gov/2920580/},
  note = {Source identifier: 2920580}
}