@misc{indiciaea61e4eeedc12,
  title = {Processing the abdominal fetal ECG.},
  author = {J T Oldenburg and M Macklin},
  year = {1977},
  doi = {10.1109/tbme.1977.326160},
  url = {https://pubmed.ncbi.nlm.nih.gov/914289/},
  note = {Source identifier: 914289}
}