@misc{indiciaed420f4ab2131,
  title = {Differential unit assignments.},
  author = {D K Gillespie},
  year = {1966},
  doi = {10.1111/j.1746-1561.1966.tb05543.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/5175353/},
  note = {Source identifier: 5175353}
}