@misc{indiciae45437c36c7ec,
  title = {Cross-sectional survey sampling.},
  author = {D Birnbaum},
  year = {1989},
  doi = {10.1086/645933},
  url = {https://pubmed.ncbi.nlm.nih.gov/2584676/},
  note = {Source identifier: 2584676}
}