@misc{indiciae66ed0ed6fd73,
  title = {Estimation of extrapolation numbers.},
  author = {E H Porter},
  year = {1970},
  doi = {10.1259/0007-1285-43-507-224-c},
  url = {https://pubmed.ncbi.nlm.nih.gov/5435127/},
  note = {Source identifier: 5435127}
}