@misc{indiciaef584b94449c8,
  title = {Online estimation of cardiac output from respiratory data using a gradient method.},
  author = {J C Maloney and G A Bekey},
  year = {1976},
  doi = {10.1007/bf02476114},
  url = {https://pubmed.ncbi.nlm.nih.gov/967173/},
  note = {Source identifier: 967173}
}