@misc{indiciae072fa05ffe15,
  title = {Complex dynamics underlying the human electrocardiogram.},
  author = {F Ravelli and R Antolini},
  year = {1992},
  doi = {10.1007/bf00201802},
  url = {https://pubmed.ncbi.nlm.nih.gov/1606244/},
  note = {Source identifier: 1606244}
}