@misc{indiciae3cde10458e20,
  title = {Managerial hierarchies.},
  author = {A H Clarke},
  year = {1973},
  doi = {10.1016/s0140-6736(73)92297-6},
  url = {https://pubmed.ncbi.nlm.nih.gov/4124914/},
  note = {Source identifier: 4124914}
}