@misc{indiciae7c7e453204d8,
  title = {Contracts: concepts and pitfalls.},
  author = {C A James},
  year = {1970},
  doi = {10.1093/ptj/50.8.1213},
  url = {https://pubmed.ncbi.nlm.nih.gov/5456844/},
  note = {Source identifier: 5456844}
}