@misc{indiciae3cdc409a4318,
  title = {Evaluating the effect of co-contraction in optimization models.},
  author = {R E Hughes and J C Bean and D B Chaffin},
  year = {1995},
  doi = {10.1016/0021-9290(95)95277-c},
  url = {https://pubmed.ncbi.nlm.nih.gov/7657686/},
  note = {Source identifier: 7657686}
}