@misc{indiciae477055bbb523,
  title = {[Comparison of submaximal testing technics--gradually increasing, continously increasing and constant work--for study of the cardiovascular system].},
  author = {W Sieber},
  year = {1973},
  url = {https://pubmed.ncbi.nlm.nih.gov/4767205/},
  note = {Source identifier: 4767205}
}