@misc{indiciae57f211ad3a1f,
  title = {More on the quadrilateral analysis.},
  author = {L G Nieberg},
  year = {1986},
  doi = {10.1016/0002-9416(86)90117-x},
  url = {https://pubmed.ncbi.nlm.nih.gov/3455799/},
  note = {Source identifier: 3455799}
}