@misc{indiciaeca55ac04e871,
  title = {Compact digital storage of sequential left ventricular contours.},
  author = {B R Hieb and G C Oliver},
  year = {1976},
  doi = {10.1016/0010-4809(76)90045-8},
  url = {https://pubmed.ncbi.nlm.nih.gov/1253585/},
  note = {Source identifier: 1253585}
}