@misc{indiciae559d608cb6f1,
  title = {Marginal analysis in practice.},
  author = {A Mordue and N Craig},
  year = {1994},
  doi = {10.1136/bmj.309.6966.1438b},
  url = {https://pubmed.ncbi.nlm.nih.gov/7819865/},
  note = {Source identifier: 7819865}
}