@misc{indiciaedbbcc2fcd842,
  title = {Extended workdays in an underground mine: a work performance analysis.},
  author = {J C Duchon and C M Keran and T J Smith},
  year = {1994},
  doi = {10.1177/001872089403600207},
  url = {https://pubmed.ncbi.nlm.nih.gov/8070791/},
  note = {Source identifier: 8070791}
}