@misc{indiciae6f13c4ad35f7,
  title = {[Changes in heart rhythm during hypoxic functional tests].},
  author = {V B Malkin and V I Plakhatniuk},
  year = {1972},
  url = {https://pubmed.ncbi.nlm.nih.gov/4648210/},
  note = {Source identifier: 4648210}
}